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

Universal Citation: NV Admin Code 445A.1814
Current through September 16, 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

Disclaimer: These regulations may not be the most recent version. Nevada may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.