Nevada Administrative Code › Chapter 445A - Water Controls › WATER POLLUTION CONTROL › Standards for Water Quality › Section 445A.1814 - Carson Region: Carson River at the Mexican Ditch Gage

Current through June 11, 2024
The limits of this table apply to the body of water known as
				  the Carson River from U.S. Highway 395 at Cradlebaugh Bridge to the Mexican
				  Ditch Gage. This segment of the Carson River is located in Carson City and
				  Douglas County.
STANDARDS OF WATER QUALITY
Carson River at the Mexican Ditch Gage
PARAMETER
REQUIREMENTS TO MAINTAIN
							 EXISTING HIGHER QUALITY
WATER QUALITY STANDARDS FOR
							 BENEFICIAL USES
Beneficial
							 Usea
Livestock
Irrigation
Aquatic
Contact
Noncontact
Municipal
Industrial
Wildlife
Aesthetic
Enhance
Marsh
Beneficial Uses
X
X
X
X
X
X
X
X
Aquatic Life Species of Concern
Rainbow trout and brown trout.
Temperature - °C
							 [DELTA]Tb - °C
[DELTA]T
= 0
S.V. Nov-Apr S.V. May-Jun S.V. Jul-Oct [DELTA]T
[LESS THEN OR EQUAL TO] 13 [LESS THEN OR
							 EQUAL TO] 17 [LESS THEN OR EQUAL TO] 23 [LESS THEN OR EQUAL TO] 2
*
X
pH - SU
S.V.
7.4 - 8.5
S.V. [DELTA]pH
6.5 - 9.0 ± 0.5
X
X
X
*
X
X
*
Dissolved Oxygen - mg/l
S.V. Nov-Apr S.V. May-Oct
[GREATER THEN OR EQUAL TO] 6.0 [GREATER
							 THEN OR EQUAL TO] 5.0
X
*
X
X
X
X
Total Phosphates (as P) - mg/l
A-Avg.
[LESS THEN OR EQUAL TO] 0.10
*
*
X
X
Nitrogen Species (as N) - mg/l
Total Nitrogen
Nitrate S.V. Nitrite S.V.
[LESS THEN OR EQUAL TO] 10
							 [LESS THEN OR EQUAL TO] 0.06
X
*
X
X
*
X
A-Avg. S.V.
[LESS THEN OR EQUAL TO] 0.8 [LESS THEN OR
							 EQUAL TO] 1.3
Total Ammonia (as N) - mg/l
c
*
Suspended Solids - mg/l
S.V.
[LESS THEN OR EQUAL TO] 80
*
Turbidity - NTU
S.V.
[LESS THEN OR EQUAL TO] 10
*
X
Color - PCU
d
S.V.
[LESS THEN OR EQUAL TO] 75
*
Total Dissolved Solids - mg/l
A-Avg. S.V.
[LESS THEN OR EQUAL TO] 285 [LESS THEN OR
							 EQUAL TO] 360
A-Avg.
[LESS THEN OR EQUAL TO] 500
X
X
*
Chloride - mg/l
A-Avg. S.V.
[LESS THEN OR EQUAL TO] 17 [LESS THEN OR
							 EQUAL TO] 23
S.V.
[LESS THEN OR EQUAL TO] 250
X
X
*
X
Sulfate - mg/l
A-Avg. S.V.
[LESS THEN OR EQUAL TO] 24 [LESS THEN OR
							 EQUAL TO] 100
S.V.
[LESS THEN OR EQUAL TO] 250
*
Sodium - SAR
A-Avg.
[LESS THEN OR EQUAL TO] 2
A-Avg.
[LESS THEN OR EQUAL TO] 8
*
X
Alkalinity (as CaCO3) -
							 mg/l
25% change from natural conditions
*
X
E. coli - No./100 ml
A.G.M. S.V.
[LESS THEN OR EQUAL TO] 126 [LESS THEN OR EQUAL TO]
							 410
*
X
Fecal Coliform - No./100 ml
A.G.M. S.V.
[LESS THEN OR EQUAL TO] 110 [LESS THEN OR
							 EQUAL TO] 295
S.V.
[LESS THEN OR EQUAL TO] 1,000
X
*
X
X
X
* = The most restrictive beneficial use.
X = Beneficial use.
a Refer to NAC 445A.122 and
				  445A.1792 for beneficial use terminology.
b Maximum allowable increase in
				  temperature above water temperature at the boundary of an approved mixing zone,
				  but the increase must not cause a violation of the single value
				  standard.
c The ambient water quality
				  criteria for ammonia are specified in NAC 445A.118.
d Increase in color must not be
				  more than 10 PCU above natural conditions.
Added to NAC by
				  Environmental Comm'n by R160-06, eff. 8-26-2008; A by R131-12,
				  12-20-2012
NRS
					 445A.425,
					 445A.520