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Ohio Administrative Code (Last Updated: January 12, 2021) |
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3745 Ohio Environmental Protection Agency |
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Chapter3745-1. Water Quality Standards |
3745-1-35. Aquatic life and wildlife criteria
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[Comment: For dates of non-regulatory government publications, publications of recognized organizations and associations, federal rules and federal statutory provisions referenced in this rule, see rule 3745-1-03 of the Administrative Code.]
[Comment: For definitions of the use designation, see rule 3745-1-07 of the Administrative Code. For all other definitions, see rule 3745-1-02 of the Administrative Code.]
(A) The chemical-specific criteria listed in this rule apply as "Outside Mixing Zone" or "Inside Mixing Zone Maximum." For the purpose of setting water quality based effluent limits, the criteria which apply "Outside Mixing Zone" shall be met after the effluent and the receiving water are reasonably well mixed as provided in rules 3745-1-06 and 3745-2-05 of the Administrative Code. The criteria listed as "Inside Mixing Zone Maximum" shall be applicable as end-of-pipe maximum effluent limits or as criteria to be met within a short distance of the effluent pipe except as provided in rule 3745-2-08 of the Administrative Code. Possible exceptions regarding the application of these criteria may apply as described in paragraph (C) of rule 3745-1-07 of the Administrative Code.
(B) The water quality criteria adopted in, or developed pursuant to, this rule shall apply as follows:
(1) The "Inside Mixing Zone Maximum" and "Outside Mixing Zone Maximum" water quality criteria for the protection of aquatic life, or site-specific modifications thereof, shall apply to all water bodies. Water quality criteria applicable to specific aquatic life use designations are listed where appropriate. The "Inside Mixing Zone Maximum" and "Outside Mixing Zone Maximum" water quality criteria identified for the warmwater habitat use designation apply to water bodies not assigned an aquatic life use designation.
(2) The "Outside Mixing Zone Average" water quality criteria for the protection of aquatic life, or site-specific modifications thereof, shall apply to all water bodies except those water bodies assigned the limited resource water use designation. However, the limited resource water "Outside Mixing Zone Average" water quality criteria for dissolved oxygen, pH and temperature apply to water bodies assigned the limited resource water use designation.
Water quality criteria applicable to specific aquatic life use designations are listed where appropriate. The "Outside Mixing Zone Average" water quality criteria identified for the warmwater habitat use designation apply to water bodies not assigned an aquatic life use designation.
(3) Criteria for protection of wildlife, or site-specific modifications thereof, are "Outside Mixing Zone Average" water quality criteria and shall apply to all water bodies located in the lake Erie drainage basin.
(C) For any pollutant for which it is demonstrated that a methodology or procedure cited in this chapter is not scientifically defensible, the director may apply an alternative methodology or procedure acceptable under 40 C.F.R. 131 when developing water quality criteria.
(D) Protection of aquatic life - whole-effluent approach.
Whole-effluent toxicity levels shall be applied in accordance with rules 3745-1-44 and 3745-33-07 of the Administrative Code.
Table 35-1. Statewide water quality criteria for the protection of aquatic life. Page 1 of 2
Chemical
Form
Units
IMZM
OMZM
OMZA
Ammonia-N (WWH)
T
mg/l
--
Table 35-2
Table 35-5
Ammonia-N (EWH)
T
mg/l
--
Table 35-3
Table 35-6
Ammonia-N (MWH)
T
mg/l
--
Table 35-2
Table 35-7
Ammonia-N (SSH)
T
mg/l
--
Table 35-4
a
Ammonia-N (CWH)
T
mg/l
--
Table 35-4
Table 35-8
Ammonia-N (LRW)
T
mg/l
--
Table 35-2
--
Arsenic
D
µg/l
680
340
150
Arsenic
TR
µg/l
680
340
150
Cadmium
Chlorine (WWH, EWH, MWH, CWH)
R
µg/l
--
19
11
Chlorine (LRW)
R
µg/l
--
19
--
Chlorine (SSH)
R
µg/l
--
b
b
Chromium
Chromium VI
D
µg/l
31
16
11
Copper
Cyanide (Lake Erie drainage basin)
free
µg/l
44
22
5.2
(Ohio river drainage basin) (WWH, EWH, MWH)
free
µg/l
92
46
12
(LRW)
free
µg/l
92
46
--
(SSH, CWH)
free
µg/l
45
22
5.2
Dieldrin
T
µg/l
0.47
0.24
0.056
Dissolved oxygen(WWH)
T
mg/l
--
4.0
5.0
Dissolved oxygen(EWH)
T
mg/l
--
5.0
6.0
Dissolved oxygen(MWH)
T
mg/l
--
3.0c
4.0
Dissolved oxygen(SSH)
T
mg/l
--
a
a
Dissolved oxygen(CWH)
T
mg/l
--
6.0
7.0
Dissolved oxygen(LRW)
T
mg/l
--
2.0
3.0
Dissolved solids
T
mg/l
--
--
1500d
Endrin
T
µg/l
0.17
0.086
0.036
Lead
Lindane
T
µg/l
1.9
0.95
--
Mercury
D
µg/l
2.9
1.4
0.77
Mercury
TR
µg/l
3.4
1.7
0.91
Nickel
Parathion
T
µg/l
0.13
0.065
0.013
Chemical
Form
Units
IMZM
OMZM
OMZA
PentachlorophenolpH (WWH, MWH)
--
s.u.
--
--
6.5 - 9.0
pH (EWH, CWH)
--
s.u.
--
--
e
pH (SSH)
--
s.u.
--
--
a
pH (LRW)
--
s.u.
--
--
6.5 - 9.0f
Selenium
D
µg/l
--
--
4.6
Selenium
TR
µg/l
--
--
5.0
Temperature (WWH, MWH)
--
OF(OC)
--
Table 35-14
Table 35-14
Temperature (EWH, CWH)
--
OF(OC)
--
g
g
Temperature (SSH)
--
OF(OC)
--
a
a
Temperature (LRW)
--
OF(OC)
--
98(37)
94(34)
Zinc
D = dissolved; R = total residual; T = total; TR = total recoverable.
mg/l = milligrams per liter (parts per million); µg/l = micrograms per liter (parts per billion); s.u. = standard units; °F = degrees fahrenheit; °C = degrees celsius.
IMZM = inside mixing zone maximum; OMZM = outside mixing zone maximum; OMZA = outside mixing zone average.
This aquatic life habitat use designation is in effect only during the months of October to May.
For dissolved oxygen, OMZM means outside mixing zone minimum and OMZA means outside mixing zone minimum twenty-four-hour average.
These criteria are implemented by multiplying them by a translator approved by the director pursuant to rule 3745-2-04 of the Administrative Code.
These criteria apply in the absence of a translator approved by the director pursuant to rule 3745-2-04 of the Administrative Code.
These criteria are water hardness dependent. See table 35-9 of this rule.
These criteria are water pH dependent. See table 35-10 of this rule.
a This criterion is the same as that for the aquatic life use designation in effect June to September. See footnote 4.
b No chlorine is to be discharged.
c The dissolved oxygen minimum at any time criterion for modified warmwater habitats in the Huron/Erie lake plain ecoregion, as identified in rules 3745-1-08 to 3745-1-30 of the Administrative Code, is 2.5 mg/l.
d Equivalent 25°C specific conductance value is 2400 micromhos/cm.
e pH is to be 6.5 - 9.0, with no change within that range attributable to human-induced conditions.
f Acid mine drainage streams over sandstone geotype are exempt from the pH criterion.
g At no time shall the water temperature exceed the temperature which would occur if there were no temperature change attributable to human activities.
Table 35-2.
Warmwater habitat, modified warmwater habitat and limited resource water
outside mixing zone maximum total ammonia-nitrogen criteria (mg/l).
pH
6.5
6.7
6.9
7.0
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
8.0
8.1
8.2
8.3
8.4
8.5
8.6
8.8
9.0
Temp. (oC) 0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.7
10.6
8.4
6.7
5.4
4.3
3.4
2.7
1.8
1.1
1
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.5
10.5
8.3
6.6
5.3
4.2
3.4
2.7
1.7
1.1
2
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.3
10.3
8.2
6.5
5.2
4.2
3.3
2.7
1.7
1.1
3
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.1
10.2
8.1
6.5
5.2
4.1
3.3
2.6
1.7
1.1
4
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.0
10.1
8.0
6.4
5.1
4.1
3.3
2.6
1.7
1.1
5
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.9
9.9
7.9
6.3
5.0
4.0
3.2
2.6
1.7
1.1
6
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.7
9.8
7.8
6.3
5.0
4.0
3.2
2.6
1.7
1.1
7
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.6
9.7
7.8
6.2
5.0
4.0
3.2
2.6
1.7
1.1
8
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.5
9.6
7.7
6.1
4.9
3.9
3.2
2.5
1.7
1.1
9
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.4
9.6
7.6
6.1
4.9
3.9
3.1
2.5
1.7
1.1
10
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.3
9.5
7.6
6.0
4.8
3.9
3.1
2.5
1.6
1.1
11
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.2
9.4
7.5
6.0
4.8
3.9
3.1
2.5
1.6
1.1
12
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.1
9.3
7.5
6.0
4.8
3.8
3.1
2.5
1.6
1.1
13
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.1
9.3
7.4
5.9
4.8
3.8
3.1
2.5
1.7
1.1
14
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.0
9.2
7.4
5.9
4.7
3.8
3.1
2.5
1.7
1.1
15
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.9
10.9
9.2
7.4
5.9
4.7
3.8
3.1
2.5
1.7
1.1
16
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.8
10.9
9.2
7.3
5.9
4.7
3.8
3.1
2.5
1.7
1.2
17
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.8
10.8
9.1
7.3
5.9
4.7
3.8
3.1
2.5
1.7
1.2
18
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.7
10.8
9.1
7.3
5.8
4.7
3.8
3.1
2.5
1.7
1.2
19
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.7
10.8
9.1
7.3
5.8
4.7
3.8
3.1
2.5
1.7
1.2
20
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.7
10.7
9.1
7.3
5.8
4.7
3.8
3.1
2.5
1.7
1.2
21
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.6
10.7
9.1
7.3
5.8
4.7
3.8
3.1
2.6
1.7
1.2
22
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.6
10.7
9.0
7.3
5.9
4.7
3.8
3.1
2.6
1.8
1.3
23
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.6
10.7
9.1
7.3
5.9
4.7
3.9
3.2
2.6
1.8
1.3
24
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.6
10.7
9.1
7.3
5.9
4.8
3.9
3.2
2.6
1.8
1.3
25
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.6
10.7
9.1
7.3
5.9
4.8
3.9
3.2
2.6
1.9
1.3
26
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.8
10.0
8.5
6.8
5.5
4.5
3.7
3.0
2.5
1.8
1.3
27
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.8
11.0
9.4
8.0
6.4
5.2
4.2
3.5
2.8
2.4
1.7
1.2
28
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.0
10.3
8.8
7.5
6.0
4.9
4.0
3.3
2.7
2.2
1.6
1.2
29
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.9
11.2
9.6
8.2
7.0
5.7
4.6
3.7
3.1
2.5
2.1
1.5
1.1
30
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.1
10.5
9.0
7.7
6.6
5.3
4.3
3.5
2.9
2.4
2.0
1.5
1.1
Table 35-3.
Exceptional warmwater habitat
outside mixing zone maximum total ammonia-nitrogen criteria (mg/l).
pH
6.5
6.7
6.9
7.0
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
8.0
8.1
8.2
8.3
8.4
8.5
8.6
8.8
9.0
Temp. (oC) 0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.6
10.9
9.3
7.8
6.6
5.2
4.2
3.3
2.6
2.1
1.7
1.1
0.7
1
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.4
10.7
9.1
7.7
6.5
5.2
4.1
3.3
2.6
2.1
1.7
1.1
0.7
2
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.2
10.6
9.0
7.6
6.4
5.1
4.1
3.2
2.6
2.1
1.6
1.1
0.7
3
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.1
10.4
8.9
7.5
6.3
5.0
4.0
3.2
2.5
2.0
1.6
1.1
0.7
4
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.9
10.3
8.8
7.4
6.2
5.0
4.0
3.2
2.5
2.0
1.6
1.0
0.7
5
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.8
10.2
8.7
7.3
6.2
4.9
3.9
3.1
2.5
2.0
1.6
1.0
0.7
6
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.6
10.1
8.6
7.3
6.1
4.9
3.9
3.1
2.5
2.0
1.6
1.0
0.7
7
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.5
9.9
8.5
7.2
6.0
4.8
3.8
3.1
2.5
2.0
1.6
1.0
0.7
8
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.4
9.8
8.4
7.1
6.0
4.8
3.8
3.0
2.4
2.0
1.6
1.0
0.7
9
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.9
11.3
9.8
8.3
7.1
5.9
4.7
3.8
3.0
2.4
1.9
1.6
1.0
0.7
10
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.8
11.2
9.7
8.3
7.0
5.9
4.7
3.7
3.0
2.4
1.9
1.6
1.0
0.7
11
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.7
11.1
9.6
8.2
6.9
5.8
4.7
3.7
3.0
2.4
1.9
1.5
1.0
0.7
12
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.6
11.0
9.5
8.1
6.9
5.8
4.6
3.7
3.0
2.4
1.9
1.5
1.0
0.7
13
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.5
10.9
9.4
8.1
6.8
5.8
4.6
3.7
2.9
2.4
1.9
1.5
1.0
0.7
14
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.4
10.8
9.4
8.0
6.8
5.7
4.6
3.7
2.9
2.4
1.9
1.5
1.0
0.7
15
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.3
10.8
9.3
8.0
6.8
5.7
4.6
3.6
2.9
2.4
1.9
1.5
1.0
0.7
16
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.2
10.7
9.3
7.9
6.7
5.7
4.5
3.6
2.9
2.4
1.9
1.5
1.0
0.7
17
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.2
10.7
9.2
7.9
6.7
5.6
4.5
3.6
2.9
2.4
1.9
1.5
1.0
0.7
18
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.1
10.6
9.2
7.9
6.7
5.6
4.5
3.6
2.9
2.4
1.9
1.6
1.0
0.7
19
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.1
10.6
9.2
7.9
6.7
5.6
4.5
3.6
2.9
2.4
1.9
1.6
1.1
0.7
20
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.0
10.5
9.2
7.8
6.7
5.6
4.5
3.6
2.9
2.4
1.9
1.6
1.1
0.8
21
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.0
10.5
9.1
7.8
6.6
5.6
4.5
3.6
2.9
2.4
1.9
1.6
1.1
0.8
22
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.0
10.5
9.1
7.8
6.6
5.6
4.5
3.6
2.9
2.4
1.9
1.6
1.1
0.8
23
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.9
10.5
9.1
7.8
6.6
5.6
4.5
3.6
2.9
2.4
2.0
1.6
1.1
0.8
24
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.9
10.5
9.1
7.8
6.6
5.6
4.5
3.6
3.0
2.4
2.0
1.6
1.1
0.8
25
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.9
10.5
9.1
7.8
6.6
5.6
4.5
3.7
3.0
2.4
2.0
1.6
1.1
0.8
26
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.5
11.1
9.8
8.5
7.3
6.2
5.3
4.2
3.4
2.8
2.3
1.9
1.5
1.1
0.8
27
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.7
10.4
9.1
7.9
6.8
5.8
4.9
4.0
3.2
2.6
2.1
1.8
1.5
1.0
0.8
28
13.0
13.0
13.0
13.0
13.0
13.0
12.1
10.9
9.7
8.5
7.4
6.4
5.4
4.6
3.7
3.0
2.5
2.0
1.7
1.4
1.0
0.7
29
13.0
13.0
13.0
13.0
13.0
12.4
11.3
10.2
9.1
8.0
6.9
6.0
5.1
4.3
3.5
2.8
2.3
1.9
1.6
1.3
0.9
0.7
30
13.0
13.0
13.0
13.0
12.6
11.6
10.6
9.5
8.5
7.5
6.5
5.6
4.8
4.1
3.3
2.7
2.2
1.8
1.5
1.2
0.9
0.7
Table 35-4.
Coldwater habitat and seasonal salmonid habitat
outside mixing zone maximum total ammonia-nitrogen criteria (mg/l).
pH
6.5
6.7
6.9
7.0
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
8.0
8.1
8.2
8.3
8.4
8.5
8.6
8.8
9.0
Temp. (oC) 0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.6
10.9
9.3
7.8
6.6
5.2
4.2
3.3
2.6
2.1
1.7
1.1
0.7
1
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.4
10.7
9.1
7.7
6.5
5.2
4.1
3.3
2.6
2.1
1.7
1.1
0.7
2
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.2
10.6
9.0
7.6
6.4
5.1
4.1
3.2
2.6
2.1
1.6
1.1
0.7
3
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.1
10.4
8.9
7.5
6.3
5.0
4.0
3.2
2.5
2.0
1.6
1.1
0.7
4
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.9
10.3
8.8
7.4
6.2
5.0
4.0
3.2
2.5
2.0
1.6
1.0
0.7
5
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.8
10.2
8.7
7.3
6.2
4.9
3.9
3.1
2.5
2.0
1.6
1.0
0.7
6
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.6
10.1
8.6
7.3
6.1
4.9
3.9
3.1
2.5
2.0
1.6
1.0
0.7
7
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.5
9.9
8.5
7.2
6.0
4.8
3.8
3.1
2.5
2.0
1.6
1.0
0.7
8
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.4
9.8
8.4
7.1
6.0
4.8
3.8
3.0
2.4
2.0
1.6
1.0
0.7
9
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.9
11.3
9.8
8.3
7.1
5.9
4.7
3.8
3.0
2.4
1.9
1.6
1.0
0.7
10
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.8
11.2
9.7
8.3
7.0
5.9
4.7
3.7
3.0
2.4
1.9
1.6
1.0
0.7
11
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.7
11.1
9.6
8.2
6.9
5.8
4.7
3.7
3.0
2.4
1.9
1.5
1.0
0.7
12
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.6
11.0
9.5
8.1
6.9
5.8
4.6
3.7
3.0
2.4
1.9
1.5
1.0
0.7
13
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.5
10.9
9.4
8.1
6.8
5.8
4.6
3.7
2.9
2.4
1.9
1.5
1.0
0.7
14
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.4
10.8
9.4
8.0
6.8
5.7
4.6
3.7
2.9
2.4
1.9
1.5
1.0
0.7
15
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.3
10.8
9.3
8.0
6.8
5.7
4.6
3.6
2.9
2.4
1.9
1.5
1.0
0.7
16
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.2
10.7
9.3
7.9
6.7
5.7
4.5
3.6
2.9
2.4
1.9
1.5
1.0
0.7
17
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.2
10.7
9.2
7.9
6.7
5.6
4.5
3.6
2.9
2.4
1.9
1.5
1.0
0.7
18
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.1
10.6
9.2
7.9
6.7
5.6
4.5
3.6
2.9
2.4
1.9
1.6
1.0
0.7
19
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.1
10.6
9.2
7.9
6.7
5.6
4.5
3.6
2.9
2.4
1.9
1.6
1.1
0.7
20
13.0
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.0
10.5
9.1
7.8
6.7
5.6
4.5
3.6
2.9
2.4
1.9
1.6
1.1
0.8
21
13.0
13.0
13.0
13.0
13.0
13.0
13.0
12.6
11.2
9.8
8.5
7.3
6.2
5.2
4.2
3.4
2.7
2.2
1.8
1.5
1.0
0.7
22
13.0
13.0
13.0
13.0
13.0
13.0
13.0
11.7
10.4
9.1
7.9
6.8
5.8
4.9
3.9
3.2
2.6
2.1
1.7
1.4
1.0
0.7
23
13.0
13.0
13.0
13.0
13.0
13.0
12.2
10.9
9.7
8.5
7.4
6.3
5.4
4.6
3.7
3.0
2.4
1.9
1.6
1.3
0.9
0.6
24
13.0
13.0
13.0
13.0
13.0
12.4
11.3
10.2
9.1
7.9
6.9
5.9
5.0
4.3
3.4
2.8
2.2
1.8
1.5
1.2
0.9
0.6
25
13.0
13.0
13.0
13.0
12.6
11.6
10.6
9.5
8.4
7.4
6.4
5.5
4.7
4.0
3.2
2.6
2.1
1.7
1.4
1.2
0.8
0.6
26
13.0
13.0
13.0
12.6
11.7
10.8
9.9
8.9
7.9
6.9
6.0
5.2
4.4
3.7
3.0
2.4
2.0
1.6
1.3
1.1
0.8
0.6
27
13.0
13.0
12.4
11.7
10.9
10.1
9.2
8.3
7.4
6.5
5.6
4.8
4.1
3.5
2.8
2.3
1.9
1.5
1.2
1.0
0.7
0.5
28
13.0
12.7
11.6
10.9
10.2
9.4
8.6
7.7
6.9
6.0
5.2
4.5
3.9
3.3
2.6
2.1
1.7
1.4
1.2
1.0
0.7
0.5
29
12.6
11.9
10.8
10.2
9.5
8.8
8.0
7.2
6.4
5.6
4.9
4.2
3.6
3.1
2.5
2.0
1.6
1.3
1.1
0.9
0.7
0.5
30
11.8
11.1
10.1
9.5
8.9
8.2
7.5
6.8
6.0
5.3
4.6
4.0
3.4
2.9
2.3
1.9
1.5
1.3
1.1
0.9
0.6
0.5
Table 35-5.
Warmwater habitat
outside mixing zone 30-day average total ammonia-nitrogen criteria (mg/l).
pH
6.5
6.7
6.9
7.0
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
8.0
8.1
8.2
8.3
8.4
8.5
8.6
8.8
9.0
Temp. (oC)
The following criteria apply during the months of December to February:
0-10
13.0
13.0
13.0
12.6
11.7
10.7
9.7
8.6
7.6
6.6
5.6
4.8
4.0
3.3
2.8
2.3
1.9
1.5
1.2
1.0
0.7
0.5
11
13.0
13.0
12.4
11.6
10.8
9.9
8.9
8.0
7.0
6.1
5.2
4.4
3.7
3.1
2.6
2.1
1.7
1.4
1.2
0.9
0.6
0.4
12
13.0
12.6
11.5
10.8
10.0
9.2
8.3
7.4
6.5
5.6
4.8
4.1
3.4
2.9
2.4
2.0
1.6
1.3
1.1
0.9
0.6
0.4
13
12.3
11.6
10.6
10.0
9.2
8.5
7.7
6.8
6.0
5.2
4.5
3.8
3.2
2.7
2.2
1.8
1.5
1.2
1.0
0.8
0.6
0.4
14
11.4
10.8
9.8
9.3
8.6
7.9
7.1
6.3
5.6
4.8
4.2
3.5
3.0
2.5
2.1
1.7
1.4
1.1
0.9
0.8
0.5
0.4
15
10.6
10.0
9.1
8.6
8.0
7.3
6.6
5.9
5.2
4.5
3.9
3.3
2.8
2.3
1.9
1.6
1.3
1.1
0.9
0.7
0.5
0.3
16
9.8
9.3
8.5
8.0
7.4
6.8
6.1
5.5
4.8
4.2
3.6
3.0
2.6
2.1
1.8
1.5
1.2
1.0
0.8
0.7
0.5
0.3
17
9.1
8.6
7.8
7.4
6.8
6.3
5.7
5.1
4.5
3.9
3.3
2.8
2.4
2.0
1.7
1.4
1.1
0.9
0.8
0.6
0.4
0.3
18
8.5
8.0
7.3
6.9
6.4
5.8
5.3
4.7
4.2
3.6
3.1
2.6
2.2
1.8
1.5
1.3
1.1
0.9
0.7
0.6
0.4
0.3
19
7.9
7.4
6.8
6.4
5.9
5.4
4.9
4.4
3.9
3.3
2.9
2.4
2.1
1.7
1.4
1.2
1.0
0.8
0.7
0.5
0.4
0.3
20
7.3
6.9
6.3
5.9
5.5
5.0
4.6
4.1
3.6
3.1
2.7
2.3
1.9
1.6
1.3
1.1
0.9
0.8
0.6
0.5
0.4
0.3
The following criteria apply during the months of March to November:
10
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.0
1.7
1.4
1.1
0.9
0.7
0.6
0.5
0.4
0.2
0.2
11
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.0
1.7
1.4
1.1
0.9
0.7
0.6
0.5
0.4
0.2
0.2
12
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.0
1.7
1.4
1.1
0.9
0.7
0.6
0.5
0.4
0.2
0.2
13
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
1.9
1.6
1.4
1.1
0.9
0.7
0.6
0.5
0.4
0.2
0.2
14
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
1.9
1.6
1.4
1.1
0.9
0.7
0.6
0.5
0.4
0.2
0.2
15
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
1.9
1.6
1.4
1.1
0.9
0.7
0.6
0.5
0.4
0.2
0.2
16
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
1.9
1.6
1.4
1.1
0.9
0.7
0.6
0.5
0.4
0.2
0.2
17
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
1.9
1.6
1.4
1.1
0.9
0.7
0.6
0.5
0.4
0.3
0.2
18
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
1.9
1.6
1.4
1.1
0.9
0.7
0.6
0.5
0.4
0.3
0.2
19
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
1.9
1.6
1.4
1.1
0.9
0.7
0.6
0.5
0.4
0.3
0.2
20
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
1.9
1.6
1.4
1.1
0.9
0.7
0.6
0.5
0.4
0.3
0.2
21
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
1.8
1.5
1.3
1.0
0.8
0.7
0.5
0.4
0.4
0.2
0.2
22
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.6
1.4
1.2
0.9
0.8
0.6
0.5
0.4
0.3
0.2
0.2
23
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.5
1.3
1.1
0.9
0.7
0.6
0.5
0.4
0.3
0.2
0.2
24
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.4
1.2
1.0
0.8
0.7
0.5
0.4
0.4
0.3
0.2
0.1
25
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.3
1.1
1.0
0.8
0.6
0.5
0.4
0.3
0.3
0.2
0.1
26
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.2
1.1
0.9
0.7
0.6
0.5
0.4
0.3
0.3
0.2
0.1
27
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.2
1.0
0.8
0.7
0.5
0.4
0.4
0.3
0.2
0.2
0.1
28
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.1
0.9
0.8
0.6
0.5
0.4
0.3
0.3
0.2
0.2
0.1
29
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.0
0.9
0.7
0.6
0.5
0.4
0.3
0.3
0.2
0.2
0.1
30
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.0
0.8
0.7
0.6
0.5
0.4
0.3
0.3
0.2
0.2
0.1
Table 35-6.
Exceptional warmwater habitat
outside mixing zone 30-day average total ammonia-nitrogen criteria (mg/l).
pH
6.5
6.7
6.9
7.0
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
8.0
8.1
8.2
8.3
8.4
8.5
8.6
8.8
9.0
Temp. (oC)
The following criteria apply during the months of December to February:
0-10
13.0
13.0
13.0
12.6
11.7
10.7
9.7
8.6
7.6
6.6
5.6
4.8
4.0
3.3
2.8
2.3
1.9
1.5
1.2
1.0
0.7
0.5
11
13.0
13.0
12.4
11.6
10.8
9.9
8.9
8.0
7.0
6.1
5.2
4.4
3.7
3.1
2.6
2.1
1.7
1.4
1.2
0.9
0.6
0.4
12
13.0
12.6
11.5
10.8
10.0
9.2
8.3
7.4
6.5
5.6
4.8
4.1
3.4
2.9
2.4
2.0
1.6
1.3
1.1
0.9
0.6
0.4
13
12.3
11.6
10.6
10.0
9.2
8.5
7.7
6.8
6.0
5.2
4.5
3.8
3.2
2.7
2.2
1.8
1.5
1.2
1.0
0.8
0.6
0.4
14
11.4
10.8
9.8
9.3
8.6
7.9
7.1
6.3
5.6
4.8
4.2
3.5
3.0
2.5
2.1
1.7
1.4
1.1
0.9
0.8
0.5
0.4
15
10.6
10.0
9.1
8.6
8.0
7.3
6.6
5.9
5.2
4.5
3.9
3.3
2.8
2.3
1.9
1.6
1.3
1.1
0.9
0.7
0.5
0.3
16
9.8
9.3
8.5
8.0
7.4
6.8
6.1
5.5
4.8
4.2
3.6
3.0
2.6
2.1
1.8
1.5
1.2
1.0
0.8
0.7
0.5
0.3
17
9.1
8.6
7.8
7.4
6.8
6.3
5.7
5.1
4.5
3.9
3.3
2.8
2.4
2.0
1.7
1.4
1.1
0.9
0.8
0.6
0.4
0.3
18
8.5
8.0
7.3
6.9
6.4
5.8
5.3
4.7
4.2
3.6
3.1
2.6
2.2
1.8
1.5
1.3
1.1
0.9
0.7
0.6
0.4
0.3
19
7.9
7.4
6.8
6.4
5.9
5.4
4.9
4.4
3.9
3.3
2.9
2.4
2.1
1.7
1.4
1.2
1.0
0.8
0.7
0.5
0.4
0.3
20
7.3
6.9
6.3
5.9
5.5
5.0
4.6
4.1
3.6
3.1
2.7
2.3
1.9
1.6
1.3
1.1
0.9
0.8
0.6
0.5
0.4
0.3
The following criteria apply during the months of March to November:
10
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
1.9
1.6
1.3
1.1
0.9
0.7
0.5
0.4
0.4
0.2
0.2
11
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
1.9
1.6
1.3
1.1
0.8
0.7
0.5
0.4
0.4
0.2
0.2
12
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
1.9
1.6
1.3
1.1
0.8
0.7
0.5
0.4
0.4
0.2
0.2
13
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
1.8
1.6
1.3
1.0
0.8
0.7
0.5
0.4
0.4
0.2
0.2
14
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
1.8
1.6
1.3
1.0
0.8
0.7
0.5
0.4
0.4
0.2
0.2
15
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
1.8
1.5
1.3
1.0
0.8
0.7
0.5
0.4
0.4
0.2
0.2
16
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
1.8
1.5
1.3
1.0
0.8
0.7
0.5
0.4
0.4
0.2
0.2
17
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
1.8
1.5
1.3
1.0
0.8
0.7
0.5
0.4
0.4
0.2
0.2
18
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
1.8
1.5
1.3
1.0
0.8
0.7
0.5
0.4
0.4
0.2
0.2
19
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
1.8
1.5
1.3
1.0
0.8
0.7
0.5
0.4
0.4
0.2
0.2
20
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
1.8
1.5
1.3
1.0
0.8
0.7
0.5
0.4
0.4
0.2
0.2
21
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.7
1.4
1.2
1.0
0.8
0.6
0.5
0.4
0.3
0.2
0.2
22
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.6
1.3
1.1
0.9
0.7
0.6
0.5
0.4
0.3
0.2
0.2
23
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.4
1.2
1.0
0.8
0.7
0.5
0.4
0.4
0.3
0.2
0.1
24
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.3
1.1
1.0
0.8
0.6
0.5
0.4
0.3
0.3
0.2
0.1
25
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.3
1.1
0.9
0.7
0.6
0.5
0.4
0.3
0.3
0.2
0.1
26
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.2
1.0
0.8
0.7
0.6
0.4
0.4
0.3
0.2
0.2
0.1
27
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.1
0.9
0.8
0.6
0.5
0.4
0.3
0.3
0.2
0.2
0.1
28
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.0
0.9
0.7
0.6
0.5
0.4
0.3
0.3
0.2
0.2
0.1
29
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.0
0.8
0.7
0.6
0.5
0.4
0.3
0.3
0.2
0.2
0.1
30
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
0.9
0.8
0.7
0.5
0.4
0.4
0.3
0.2
0.2
0.1
0.1
Table 35-7.
Modified warmwater habitat
outside mixing zone 30-day average total ammonia-nitrogen criteria (mg/l).
pH
6.5
6.7
6.9
7.0
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
8.0
8.1
8.2
8.3
8.4
8.5
8.6
8.8
9.0
Temp. (oC)
The following criteria apply during the months of December to February:
0-10
13.0
13.0
13.0
12.6
11.7
10.7
9.7
8.6
7.6
6.6
5.6
4.8
4.0
3.3
2.8
2.3
1.9
1.5
1.2
1.0
0.7
0.5
11
13.0
13.0
12.4
11.6
10.8
9.9
8.9
8.0
7.0
6.1
5.2
4.4
3.7
3.1
2.6
2.1
1.7
1.4
1.2
0.9
0.6
0.4
12
13.0
12.6
11.5
10.8
10.0
9.2
8.3
7.4
6.5
5.6
4.8
4.1
3.4
2.9
2.4
2.0
1.6
1.3
1.1
0.9
0.6
0.4
13
12.3
11.6
10.6
10.0
9.2
8.5
7.7
6.8
6.0
5.2
4.5
3.8
3.2
2.7
2.2
1.8
1.5
1.2
1.0
0.8
0.6
0.4
14
11.4
10.8
9.8
9.3
8.6
7.9
7.1
6.3
5.6
4.8
4.2
3.5
3.0
2.5
2.1
1.7
1.4
1.1
0.9
0.8
0.5
0.4
15
10.6
10.0
9.1
8.6
8.0
7.3
6.6
5.9
5.2
4.5
3.9
3.3
2.8
2.3
1.9
1.6
1.3
1.1
0.9
0.7
0.5
0.3
16
9.8
9.3
8.5
8.0
7.4
6.8
6.1
5.5
4.8
4.2
3.6
3.0
2.6
2.1
1.8
1.5
1.2
1.0
0.8
0.7
0.5
0.3
17
9.1
8.6
7.8
7.4
6.8
6.3
5.7
5.1
4.5
3.9
3.3
2.8
2.4
2.0
1.7
1.4
1.1
0.9
0.8
0.6
0.4
0.3
18
8.5
8.0
7.3
6.9
6.4
5.8
5.3
4.7
4.2
3.6
3.1
2.6
2.2
1.8
1.5
1.3
1.1
0.9
0.7
0.6
0.4
0.3
19
7.9
7.4
6.8
6.4
5.9
5.4
4.9
4.4
3.9
3.3
2.9
2.4
2.1
1.7
1.4
1.2
1.0
0.8
0.7
0.5
0.4
0.3
20
7.3
6.9
6.3
5.9
5.5
5.0
4.6
4.1
3.6
3.1
2.7
2.3
1.9
1.6
1.3
1.1
0.9
0.8
0.6
0.5
0.4
0.3
The following criteria apply during the months of March to November:
10
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
2.9
2.5
2.1
1.7
1.3
1.1
0.9
0.7
0.6
0.4
0.2
11
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
2.9
2.5
2.1
1.7
1.3
1.1
0.8
0.7
0.6
0.4
0.2
12
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
2.9
2.4
2.1
1.6
1.3
1.1
0.8
0.7
0.5
0.4
0.2
13
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
2.9
2.4
2.0
1.6
1.3
1.0
0.8
0.7
0.5
0.4
0.2
14
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
2.9
2.4
2.0
1.6
1.3
1.0
0.8
0.7
0.5
0.4
0.2
15
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
2.8
2.4
2.0
1.6
1.3
1.0
0.8
0.7
0.5
0.4
0.3
16
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
2.8
2.4
2.0
1.6
1.3
1.0
0.8
0.7
0.5
0.4
0.3
17
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
2.8
2.4
2.0
1.6
1.3
1.0
0.8
0.7
0.5
0.4
0.3
18
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
2.8
2.4
2.0
1.6
1.3
1.0
0.8
0.7
0.6
0.4
0.3
19
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
2.8
2.4
2.0
1.6
1.3
1.0
0.8
0.7
0.6
0.4
0.3
20
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
2.8
2.4
2.0
1.6
1.3
1.0
0.8
0.7
0.6
0.4
0.3
21
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
2.6
2.2
1.9
1.5
1.2
1.0
0.8
0.6
0.5
0.4
0.3
22
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.4
2.1
1.7
1.4
1.1
0.9
0.7
0.6
0.5
0.3
0.2
23
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.3
1.9
1.6
1.3
1.0
0.8
0.7
0.6
0.5
0.3
0.2
24
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.1
1.8
1.5
1.2
1.0
0.8
0.6
0.5
0.4
0.3
0.2
25
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.0
1.7
1.4
1.1
0.9
0.7
0.6
0.5
0.4
0.3
0.2
26
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
1.8
1.6
1.3
1.1
0.9
0.7
0.6
0.5
0.4
0.3
0.2
27
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
1.7
1.5
1.2
1.0
0.8
0.7
0.5
0.4
0.4
0.3
0.2
28
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.6
1.4
1.2
0.9
0.8
0.6
0.5
0.4
0.3
0.2
0.2
29
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.5
1.3
1.1
0.9
0.7
0.6
0.5
0.4
0.3
0.2
0.2
30
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.4
1.2
1.0
0.8
0.7
0.5
0.5
0.4
0.3
0.2
0.2
Table 35-8.
Coldwater habitat
outside mixing zone 30-day average total ammonia-nitrogen criteria (mg/l).
pH
6.5
6.7
6.9
7.0
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
8.0
8.1
8.2
8.3
8.4
8.5
8.6
8.8
9.0
Temp. (oC) 0
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.1
1.8
1.5
1.2
0.9
0.8
0.6
0.5
0.4
0.2
0.2
1
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.1
1.8
1.5
1.2
0.9
0.7
0.6
0.5
0.4
0.2
0.2
2
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.1
1.7
1.5
1.2
0.9
0.7
0.6
0.5
0.4
0.2
0.2
3
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.0
1.7
1.4
1.1
0.9
0.7
0.6
0.5
0.4
0.2
0.2
4
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.0
1.7
1.4
1.1
0.9
0.7
0.6
0.5
0.4
0.2
0.2
5
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.0
1.7
1.4
1.1
0.9
0.7
0.6
0.5
0.4
0.2
0.2
6
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.0
1.7
1.4
1.1
0.9
0.7
0.6
0.5
0.4
0.2
0.2
7
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
1.9
1.6
1.4
1.1
0.9
0.7
0.6
0.4
0.4
0.2
0.2
8
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
1.9
1.6
1.4
1.1
0.9
0.7
0.6
0.4
0.4
0.2
0.2
9
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
1.9
1.6
1.3
1.1
0.9
0.7
0.6
0.4
0.4
0.2
0.2
10
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
1.9
1.6
1.3
1.1
0.9
0.7
0.5
0.4
0.4
0.2
0.2
11
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
1.9
1.6
1.3
1.1
0.8
0.7
0.5
0.4
0.4
0.2
0.2
12
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
1.9
1.6
1.3
1.1
0.8
0.7
0.5
0.4
0.4
0.2
0.2
13
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
1.8
1.6
1.3
1.0
0.8
0.7
0.5
0.4
0.4
0.2
0.2
14
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
1.8
1.6
1.3
1.0
0.8
0.7
0.5
0.4
0.4
0.2
0.2
15
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
1.8
1.5
1.3
1.0
0.8
0.7
0.5
0.4
0.4
0.2
0.2
16
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
1.7
1.4
1.2
1.0
0.8
0.6
0.5
0.4
0.3
0.2
0.2
17
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.6
1.3
1.1
0.9
0.7
0.6
0.5
0.4
0.3
0.2
0.1
18
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.5
1.2
1.0
0.8
0.7
0.5
0.4
0.4
0.3
0.2
0.1
19
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.4
1.2
1.0
0.8
0.6
0.5
0.4
0.3
0.3
0.2
0.1
20
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.3
1.1
0.9
0.7
0.6
0.5
0.4
0.3
0.3
0.2
0.1
21
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.2
1.0
0.8
0.7
0.5
0.4
0.4
0.3
0.2
0.2
0.1
22
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.1
0.9
0.8
0.6
0.5
0.4
0.3
0.3
0.2
0.2
0.1
23
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.0
0.9
0.7
0.6
0.5
0.4
0.3
0.3
0.2
0.1
0.1
24
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.0
0.8
0.7
0.6
0.4
0.4
0.3
0.2
0.2
0.1
0.1
25
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
0.9
0.8
0.6
0.5
0.4
0.3
0.3
0.2
0.2
0.1
0.1
26
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
0.8
0.7
0.6
0.5
0.4
0.3
0.3
0.2
0.2
0.1
0.1
27
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.2
0.2
0.1
0.1
28
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.7
0.6
0.5
0.4
0.3
0.3
0.2
0.2
0.2
0.1
0.1
29
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.7
0.6
0.5
0.4
0.3
0.3
0.2
0.2
0.1
0.1
0.1
30
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.6
0.5
0.5
0.4
0.3
0.2
0.2
0.2
0.1
0.1
0.1
Table 35-9.
Statewide water quality criteria for the protection of aquatic life for water hardness Page 1 of 2 dependent criteria.
Chemical
Form
Units
Equation
Chemical
100
200
300
400
Cadmium IMZM
D
µg/l
e ( 1.128 [ln H] - 3.051 )
8.5
19
29
41
OMZM
D
µg/l
e( 1.128 [ln H] - 3.744 )
4.3
9.3
15
20
OMZA
D
µg/l
e( 0.7852 [ln H] - 2.810 )
2.2
3.9
5.3
6.6
Cadmium IMZM
TR
µg/l
e( 1.128 [ln H] - 2.9936 )
9.0
20
31
43
OMZM
TR
µg/l
e( 1.128 [ln H] - 3.6867 )
4.5
9.9
16
22
OMZA
TR
µg/l
e( 0.7852 [ln H] - 2.715 )
2.5
4.2
5.8
7.3
Chromium IMZM
D
µg/l
e( 0.819 [ln H] + 3.2667 )
1100
2000
2800
3500
OMZM
D
µg/l
e( 0.819 [ln H] + 2.5736 )
570
1000
1400
1800
OMZA
D
µg/l
e( 0.819 [ln H] + 0.5340 )
74
130
180
230
Chromium IMZM
TR
µg/l
e( 0.819 [ln H] + 4.4187 )
3600
6400
8900
11000
OMZM
TR
µg/l
e( 0.819 [ln H] + 3.7256 )
1800
3200
4400
5600
OMZA
TR
µg/l
e( 0.819 [ln H] + 0.6848 )
86
150
210
270
Copper IMZM
D
µg/l
e( 0.9422 [ln H] - 1.048 )
27
52
76
99
OMZM
D
µg/l
e( 0.9422 [ln H] - 1.741 )
13
26
38
50
OMZA
D
µg/l
e( 0.8545 [ln H] - 1.743 )
9.0
16
23
29
Copper IMZM
TR
µg/l
e( 0.9422 [ln H] - 1.007 )
28
54
79
100
OMZM
TR
µg/l
e( 0.9422 [ln H] - 1.700 )
14
27
39
52
OMZA
TR
µg/l
e( 0.8545 [ln H] - 1.702 )
9.3
17
24
30
Lead IMZM
D
µg/l
e( 1.273 [ln H] - 0.5964 )
190
470
780
1100
OMZM
D
µg/l
e( 1.273 [ln H] - 1.289 )
97
230
390
570
OMZA
D
µg/l
e( 1.273 [ln H] - 4.237 )
5.1
12
21
30
Lead IMZM
TR
µg/l
e( 1.273 [ln H] - 0.3619 )
240
590
990
1400
OMZM
TR
µg/l
e( 1.273 [ln H] - 1.055 )
120
300
500
710
OMZA
TR
µg/l
e( 1.273 [ln H] - 4.003 )
6.4
16
26
37
Nickel IMZM
D
µg/l
e( 0.846 [ln H] + 2.946 )
940
1700
2400
3000
OMZM
D
µg/l
e( 0.846 [ln H] + 2.253 )
470
840
1200
1500
OMZA
D
µg/l
e( 0.846 [ln H] + 0.0554 )
52
93
130
170
Nickel IMZM
TR
µg/l
e( 0.846 [ln H] + 2.948 )
940
1700
2400
3000
OMZM
TR
µg/l
e( 0.846 [ln H] + 2.255 )
470
840
1200
1500
OMZA
TR
µg/l
e( 0.846 [ln H] + 0.0584 )
52
94
130
170
Zinc IMZM
D
µg/l
e( 0.8473 [ln H] + 1.555 )
230
420
590
760
OMZM
D
µg/l
e( 0.8473 [ln H] + 0.862 )
120
210
300
380
OMZA
D
µg/l
e( 0.8473 [ln H] + 0.870 )
120
210
300
380
Zinc IMZM
TR
µg/l
e( 0.8473 [ln H] + 1.577 )
240
430
610
780
OMZM
TR
µg/l
e( 0.8473 [ln H] + 0.884 )
120
220
300
390
OMZA
TR
µg/l
e( 0.8473 [ln H] + 0.884 )
120
220
300
390
D = dissolved; TR = total recoverable.
µg/l = micrograms per liter (parts per billion).
IMZM = inside mixing zone maximum; OMZM = outside mixing zone maximum; OMZA = outside mixing zone average.
These criteria are implemented by multiplying them by a translator approved by the director pursuant to rule 3745-2-04 of the Administrative Code.
These criteria apply in the absence of a translator approved by the director pursuant to rule 3745-2-04 of the Administrative Code.
Numeric criteria are presented at example water hardnesses. The equations can be used to calculate numeric criteria at any water hardness up to 400 mg/l CaCO3. "e" = the base e exponential function. "ln H" = the natural logarithm of the water hardness. The criteria at a water hardness of 400 mg/l CaCO3are used for water hardnesses above 400 mg/l CaCO3.
Chemical
Form
Units
Equation
Criteria
6.5
7.5
8.0
9.0
Pentachlorophenol
IMZM
T
µg/l
e( 1.005 [pH] - 4.176 )
11
29
48
130
OMZM
T
µg/l
e( 1.005 [pH] - 4.869 )
5.3
14
24
65
OMZA
T
µg/l
e( 1.005 [pH] - 5.134 )
4.0
11
18
50
T = total.
µg/l = micrograms per liter (parts per billion).
IMZM = inside mixing zone maximum; OMZM = outside mixing zone maximum; OMZA = outside mixing zone average.
Numeric criteria are presented at example water pH. The equations can be used to calculate numeric criteria at any water pH between 6.5 and 9.0. "e" = the base e exponential function.
Table 35-11. Temperature criteria.
(A) General Ohio river basin - includes all waters of the state within the boundaries of the Ohio river basin, excluding the Ohio river and those water bodies or water body segments as designated in paragraphs (B) to (F) of this table. Shown as degrees Fahrenheit and (Celsius).
Jan.
Feb.
Mar.
Mar.
Apr.
Apr.
May
May
June
1-31
1-29
1-15
16-31
1-15
16-30
1-15
16-31
1-15
Average:
47
47
51
54
59
65
67
70
74
( 8.3 )
( 8.3 )
( 10.0 )
( 12.2 )
( 15.0 )
( 18.3 )
( 19.4 )
( 21.1 )
( 23.3 )
Daily Maximum:
52
52
56
59
65
70
73
76
80
( 11.1 )
( 11.1 )
( 13.3 )
( 15.0 )
( 18.3 )
( 21.1 )
( 22.8 )
( 24.4 )
( 26.7 )
June
July
Aug.
Sept.
Sept.
Oct.
Oct.
Nov.
Dec.
16-30
1-31
1-31
1-15
16-30
1-15
16-31
1-30
1-31
Average:
82
82
82
82
73
71
65
60
47
( 27.8 )
( 27.8 )
( 27.8 )
( 27.8 )
( 22.8 )
( 21.7 )
( 18.3 )
( 15.6 )
( 8.3 )
Daily Maximum:
85
85
85
85
78
76
70
65
52
( 29.4 )
( 29.4 )
( 29.4 )
( 29.4 )
( 25.6 )
( 24.4 )
( 21.1 )
( 18.3 )
( 11.1 )
(B) Lower great Miami river - Steele dam in Dayton (river mile 81.3 ) to the confluence with the Ohio river. Shown as degrees Fahrenheit and (Celsius).
Jan.
Feb.
Mar.
Mar.
Apr.
Apr.
May
May
June
1-31
1-29
1-15
16-31
1-15
16-30
1-15
16-31
1-15
Average:
49
49
53
56
59
65
67
70
75
( 9.4 )
( 9.4 )
( 11.9 )
( 13.3 )
( 15.0 )
( 18.3 )
( 19.4 )
( 21.1 )
( 23.9 )
Daily Maximum:
54
54
58
61
68
74
77
79
83
( 12.2 )
( 12.2 )
( 14.4 )
( 16.1 )
( 20.0 )
( 23.3 )
( 25.0 )
( 26.1 )
( 28.3 )
June
July
Aug.
Sept.
Sept.
Oct.
Oct.
Nov.
Dec.
16-30
1-31
1-31
1-15
16-30
1-15
16-31
1-30
1-31
Average:
85
85
85
85
78
71
66
63
49
( 29.4 )
( 29.4 )
( 29.4 )
( 29.4 )
( 25.6 )
( 21.7 )
( 18.9 )
( 17.2 )
( 9.4 )
Daily Maximum:
89
89
89
89
83
76
71
68
54
( 31.7 )
( 31.7 )
( 31.7 )
( 31.7 )
( 28.3 )
( 24.4 )
( 21.7 )
( 20.0 )
( 12.2 )
(C) Scioto river - Griggs dam in Columbus (river mile 136) to the confluence with the Ohio river. Shown as degrees Fahrenheit and (Celsius).
Jan.
Feb.
Mar.
Mar.
Apr.
Apr.
May
May
June
1-31
1-29
1-15
16-31
1-15
16-30
1-15
16-31
1-15
Average:
47
47
51
54
59
62
67
72
75
( 8.3 )
( 8.3 )
( 10.6 )
( 12.2 )
( 15.0 )
( 16.7 )
( 19.4 )
( 22.2 )
( 23.9 )
Daily Maximum:
52
52
56
59
65
70
75
79
82
( 11.1 )
( 11.1 )
( 13.3 )
( 15.0 )
( 18.3 )
( 21.1 )
( 23.9 )
( 26.1 )
( 27.8 )
June
July
Aug.
Sept.
Sept.
Oct.
Oct.
Nov.
Dec.
16-30
1-31
1-31
1-15
16-30
1-15
16-31
1-30
1-31
Average:
83
83
83
83
75
71
65
58
47
( 28.3 )
( 28.3 )
( 28.3 )
( 28.3 )
( 23.9 )
( 21.7 )
( 18.3 )
( 14.4 )
( 8.3 )
Daily Maximum:
87
87
87
87
80
76
70
63
52
( 30.6 )
( 30.6 )
( 30.6 )
( 30.6 )
( 26.7 )
( 24.4 )
( 21.1 )
( 17.2 )
( 11.1 )
(D) Hocking river - entire mainstem. Shown as degrees Fahrenheit and (Celsius).
Jan.
Feb.
Mar.
Mar.
Apr.
Apr.
May
May
June
1-31
1-29
1-15
16-31
1-15
16-30
1-15
16-31
1-15
Average:
45
45
51
56
59
65
67
70
74
( 7.2 )
( 7.2 )
( 10.6 )
( 13.3 )
( 15.0 )
( 18.3 )
( 19.4 )
( 21.1 )
( 23.3 )
Daily Maximum:
50
50
56
61
66
70
73
76
80
( 10.0 )
( 10.0 )
( 13.3 )
( 16.1 )
( 18.9 )
( 21.1 )
( 22.8 )
( 24.4 )
( 26.7 )
June
July
Aug.
Sept.
Sept.
Oct.
Oct.
Nov.
Dec.
16-30
1-31
1-31
1-15
16-30
1-15
16-31
1-30
1-31
Average:
83
83
83
83
77
65
62
58
45
( 28.3 )
( 28.3 )
( 28.3 )
( 28.3 )
( 25.0 )
( 18.3 )
( 16.7 )
( 14.4 )
( 7.2 )
Daily Maximum:
87
87
87
87
82
70
67
63
50
( 30.6 )
( 30.6 )
( 30.6 )
( 30.6 )
( 27.8 )
( 21.1 )
( 19.4 )
( 17.2 )
( 10.0 )
(E) Muskingum river - entire mainstem. Shown as degrees Fahrenheit and (Celsius).
Jan.
Feb.
Mar.
Mar.
Apr.
Apr.
May
May
June
1-31
1-29
1-15
16-31
1-15
16-30
1-15
16-31
1-15
Average:
45
45
53
53
58
65
68
72
76
( 7.2 )
( 7.2 )
( 11.7 )
( 11.7 )
( 14.4 )
( 18.3 )
( 20.0 )
( 22.2 )
( 24.4 )
Daily Maximum:
50
50
58
58
63
70
74
77
84
( 10.0 )
( 10.0 )
( 14.4 )
( 14.4 )
( 17.2 )
( 21.1 )
( 23.3 )
( 25.0 )
( 28.9 )
June
July
Aug.
Sept.
Sept.
Oct.
Oct.
Nov.
Dec.
16-30
1-31
1-31
1-15
16-30
1-15
16-31
1-30
1-31
Average:
85
85
85
85
80
73
67
62
47
( 29.4 )
( 29.4 )
( 29.4 )
( 29.4 )
( 26.7 )
( 22.8 )
( 19.4 )
( 16.7 )
( 8.3 )
Daily Maximum:
89
89
89
89
85
77
72
67
52
( 31.7 )
( 31.7 )
( 31.7 )
( 31.7 )
( 29.4 )
( 25.0 )
( 22.2 )
( 19.4 )
( 11.1 )
(F) Mahoning river - Leavitt road dam (river mile 46.1 ) to the Ohio- Pennsylvania state line (river mile 12.6 ). Shown as degrees Fahrenheit and (Celsius).
Jan.
Feb.
Mar.
Mar.
Apr.
Apr.
May
May
June
1-31
1-29
1-15
16-31
1-15
16-30
1-15
16-31
1-15
Average:
47
47
50
54
59
65
68
73
77
( 8.3 )
( 8.3 )
( 10.0 )
( 12.2 )
( 15.0 )
( 18.3 )
( 20.0 )
( 22.8 )
( 25.0 )
Daily Maximum:
53
53
57
61
65
70
76
79
84
( 11.7 )
( 11.7 )
( 13.9 )
( 16.1 )
( 18.3 )
( 21.1 )
( 24.4 )
( 26.1 )
( 28.9 )
June
July
Aug.
Sept.
Sept.
Oct.
Oct.
Nov.
Dec.
16-30
1-31
1-31
1-15
16-30
1-15
16-31
1-30
1-31
Average:
85
85
85
85
78
73
67
60
51
( 29.4 )
( 29.4 )
( 29.4 )
( 29.4 )
( 25.6 )
( 22.8 )
( 19.4 )
( 15.6 )
( 10.6 )
Daily Maximum:
89
89
89
89
83
77
72
66
55
( 31.7 )
( 31.7 )
( 31.7 )
( 31.7 )
( 28.3 )
( 25.0 )
( 22.2 )
( 18.9 )
( 12.8 )
(G) General lake Erie basin - includes all surface waters of the state within the boundaries of the lake Erie drainage basin, excluding lake Erie and those water bodies as designated in paragraphs (H) to (L) of this table. Shown as degrees Fahrenheit and (Celsius).
Jan.
Feb.
Mar.
Mar.
Apr.
Apr.
May
May
June
1-31
1-29
1-15
16-31
1-15
16-30
1-15
16-31
1-15
Average:
44
44
48
51
54
60
64
66
72
( 6.7 )
( 6.7 )
( 8.9 )
( 10.6 )
( 12.2 )
( 15.6 )
( 17.8 )
( 18.9 )
( 22.2 )
Daily Maximum:
49
49
53
56
61
65
69
72
76
( 9.4 )
( 9.4 )
( 11.7 )
( 13.3 )
( 16.1 )
( 18.3 )
( 20.6 )
( 22.2 )
( 24.4 )
June
July
Aug.
Sept.
Sept.
Oct.
Oct.
Nov.
Dec.
16-30
1-31
1-31
1-15
16-30
1-15
16-31
1-30
1-31
Average:
82
82
82
82
75
67
61
54
44
( 27.8 )
( 27.8 )
( 27.8 )
( 27.8 )
( 23.9 )
( 19.4 )
( 16.1 )
( 12.2 )
( 6.7 )
Daily Maximum:
85
85
85
85
80
72
66
59
49
( 29.4 )
( 29.4 )
( 29.4 )
( 29.4 )
( 26.7 )
( 22.2 )
( 18.9 )
( 15.0 )
( 9.4 )
(H) Lake Erie tributary estuaries - includes all lake Erie tributary estuaries within the lake breakwaters and extending upstream to the lake Erie mean high water level. Shown as degrees Fahrenheit and (Celsius).
Jan.
Feb.
Mar.
Mar.
Apr.
Apr.
May
May
June
1-31
1-29
1-15
16-31
1-15
16-30
1-15
16-31
1-15
Average:
-
-
-
-
-
-
-
-
-
Daily Maximum:
52
52
55
55
59
63
66
76
82
( 11.1 )
( 11.1 )
( 12.8 )
( 12.8 )
( 15.0 )
( 17.2 )
( 18.9 )
( 24.4 )
( 27.8 )
June
July
Aug.
Sept.
Sept.
Oct.
Oct.
Nov.
Dec.
16-30
1-31
1-31
1-15
16-30
1-15
16-31
1-30
1-31
Average:
84
84
84
84
-
-
-
-
-
( 28.9 )
( 28.9 )
( 28.9 )
( 28.9 )
Daily Maximum:
88
88
88
88
84
75
70
65
55
( 31.1 )
( 31.1 )
( 31.1 )
( 31.1 )
( 28.9 )
( 23.9 )
( 21.1 )
( 18.3 )
( 12.8 )
(I) Maumee river - Ohio-Indiana state line to Maumee river estuary. Shown as degrees Fahrenheit and (Celsius).
Jan.
Feb.
Mar.
Mar.
Apr.
Apr.
May
May
June
1-31
1-29
1-15
16-31
1-15
16-30
1-15
16-31
1-15
Average:
45
45
47
53
58
61
67
70
75
( 7.2 )
( 7.2 )
( 8.3 )
( 11.7 )
( 14.4 )
( 16.1 )
( 19.4 )
( 21.1 )
( 23.9 )
Daily Maximum:
50
50
52
58
63
68
72
76
80
( 10.0 )
( 10.0 )
( 11.1 )
( 14.4 )
( 17.2 )
( 20.0 )
( 22.2 )
( 24.4 )
( 26.7 )
June
July
Aug.
Sept.
Sept.
Oct.
Oct.
Nov.
Dec.
16-30
1-31
1-31
1-15
16-30
1-15
16-31
1-30
1-31
Average:
85
85
85
85
80
71
65
58
45
( 29.4 )
( 29.4 )
( 29.4 )
( 29.4 )
( 26.7 )
( 21.7 )
( 18.3 )
( 14.4 )
( 7.2 )
Daily Maximum:
89
89
89
89
85
76
70
63
50
( 31.7 )
( 31.7 )
( 31.7 )
( 31.7 )
( 29.4 )
( 24.4 )
( 21.1 )
( 17.2 )
( 10.0 )
(J) Maumee bay - includes all waters of the state known as Maumee bay including the Maumee river estuary and the estuary portions of all tributaries entering Maumee bay to the lake Erie mean high water level. Shown as degrees Fahrenheit and (Celsius).
Jan.
Feb.
Mar.
Mar.
Apr.
Apr.
May
May
June
1-31
1-29
1-15
16-31
1-15
16-30
1-15
16-31
1-15
Average:
47
47
48
50
52
57
61
65
71
( 8.3 )
( 8.3 )
( 8.9 )
( 10.0 )
( 11.1 )
( 13.9 )
( 16.1 )
( 18.3 )
( 21.7 )
Daily Maximum:
52
52
53
54
59
63
63
76
77
( 11.1 )
( 11.1 )
( 11.7 )
( 12.2 )
( 15.0 )
( 17.2 )
( 18.9 )
( 24.4 )
( 25.0 )
June
July
Aug.
Sept.
Sept.
Oct.
Oct.
Nov.
Dec.
16-30
1-31
1-31
1-15
16-30
1-15
16-31
1-30
1-31
Average:
83
83
83
83
75
69
64
59
47
( 29.3 )
( 28.3 )
( 28.3 )
( 28.3 )
( 23.9 )
( 20.6 )
( 17.8 )
( 15.0 )
( 8.3 )
Daily Maximum
87
87
87
87
80
74
69
64
52
( 30.6 )
( 30.6 )
( 30.6 )
( 30.6 )
( 26.7 )
( 23.3 )
( 20.6 )
( 17.8 )
( 11.1 )
(K) Sandusky bay - includes all waters of the state known as Sandusky bay including the Sandusky river estuary and the estuary portions of all tributaries entering Sandusky bay to the lake Erie mean high water level. Shown as degrees Fahrenheit and (Celsius).
Jan.
Feb.
Mar.
Mar.
Apr.
Apr.
May
May
June
1-31
1-29
1-15
16-31
1-15
16-30
1-15
16-31
1-15
Average:
47
47
48
50
52
57
63
68
74
( 8.3 )
( 8.3 )
( 8.9 )
( 10.0 )
( 11.1 )
( 13.9 )
( 17.2 )
( 20.0 )
( 23.3 )
Daily Maximum:
52
52
53
55
57
62
68
73
79
( 11.1 )
( 11.1 )
( 11.7 )
( 12.8 )
( 13.9 )
( 16.7 )
( 20.0 )
( 22.8 )
( 26.1 )
June
July
Aug.
Sept.
Sept.
Oct.
Oct.
Nov.
Dec.
16-30
1-31
1-31
1-15
16-30
1-15
16-31
1-30
1-31
Average:
83
83
83
83
75
69
64
59
47
( 28.3 )
( 28.3 )
( 28.3 )
( 28.3 )
( 23.9 )
( 20.6 )
( 17.8 )
( 15.0 )
( 8.3 )
Daily Maximum:
87
87
87
87
80
74
69
64
52
( 30.6 )
( 30.6 )
( 30.6 )
( 30.6 )
( 26.7 )
( 23.3 )
( 20.6 )
( 17.8 )
( 11.1 )
(L) Cuyahoga river - headwaters of the Cuyahoga river gorge dam pool (river mile 46.2 ) to the Cuyahoga river ship channel (river mile 5.6 ). Shown as degrees Fahrenheit and (Celsius).
Jan.
Feb.
Mar.
Mar.
Apr.
Apr.
May
May
June
1-31
1-29
1-15
16-31
1-15
16-30
1-15
16-31
1-15
Average:
45
45
51
53
55
60
65
71
80
( 7.2 )
( 7.2 )
( 10.6 )
( 11.7 )
( 12.8 )
( 15.6 )
( 18.3 )
( 21.7 )
( 26.7 )
Daily Maximum:
49
49
55
57
62
66
70
78
84
( 9.4 )
( 9.4 )
( 12.8 )
( 13.9 )
( 16.7 )
( 18.9 )
( 21.1 )
( 25.6 )
( 28.9 )
June
July
Aug.
Sept.
Sept.
Oct.
Oct.
Nov.
Dec.
16-30
1-31
1-31
1-15
16-30
1-15
16-31
1-30
1-31
Average:
84
84
84
84
77
70
63
55
45
( 28.9 )
( 28.9 )
( 28.9 )
( 28.9 )
( 25.0 )
( 21.1 )
( 17.2 )
( 12.8 )
( 7.2 )
Daily Maximum
88
88
88
88
82
75
69
64
52
( 31.1 )
( 31.1 )
( 31.1 )
( 31.1 )
( 27.8 )
( 23.9 )
( 20.6 )
( 17.8 )
( 11.1 )
Table 35-12. Water quality criteria for the protection of wildlife.
Additional wildlife criteria for the lake Erie basin may be calculated pursuant to rule 3745-1-43 of the Administrative Code and will be available on the Ohio EPA website at http://www.epa.ohio.gov/dsw/wqs/criteria.aspx.
Criteria (OMZA)
Chemical
Form
Units
lake Erie basin
Ohio river basin
DDT
T
µg/l
0.000011a
--
Mercury
TR
µg/l
0.0013
--
Polychlorinated biphenyls (PCBs)
T
µg/l
0.00012
0.001b
2,3,7,8-TCDD
T
µg/l
3.1 E-9
--
T = total; TR = total recoverable.
µg/l = micrograms per liter (parts per billion).
OMZA = outside mixing zone average.
aThis criterion applies to the sum of DDT and metabolites.
bIn addition, any whole sample of any representative aquatic organisms shall not exceed 0.64 mg/kg (wet weight).
Replaces: Part of: 3745-1-07
Effective:
2/6/2017
Five Year Review (FYR) Dates:
02/06/2022
Promulgated
Under: 119.03
Statutory
Authority: 6111.041
Rule
Amplifies: 6111.041
Prior
Effective Dates: 2/14/1978, 4/4/1985, 8/19/1985, 4/30/1987, 5/1/1990,
4/26/1997, 10/31/1997, 7/31/1998, 7/31/1999, 2/22/2002, 12/30/2002, 3/15/2010,
1/4/2016