Statutes, codes, and regulations
Nevada Administrative Code
Chapter 445A - Water ControlsWATER POLLUTION CONTROL
Standards for Water Quality
Section 445A.1902 - Walker Region: Walker River, East Fork at Bridge B-1475

Nev. Admin. Code § 445A.1902

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Current through November 8, 2024
Section 445A.1902 - Walker Region: Walker River, East Fork at Bridge B-1475

The limits of this table apply to the body of water known as the East Fork of the Walker River from the California-Nevada state line to Bridge B-1475. This segment of the East Fork of the Walker River is located in Lyon County.

STANDARDS OF WATER QUALITY

Walker River, East Fork at Bridge B-1475

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 Mountain whitefish, rainbow trout and brown trout.
Temperature - °C [DELTA]Tb - °C DT = 0 S.V. Nov-Apr S.V. May-Jun S.V. Jul-Oct DT [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. [DELTA]pH6.5 - 9.0 ± 0.5 X X * * X X X
Dissolved Oxygen - mg/l S.V. Nov-May S.V. Jun-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] 0.9 [LESS THEN OR EQUAL TO] 1.7
Total Ammonia (as N) - mg/lc *
Suspended Solids - mg/l S.V. [LESS THEN OR EQUAL TO] 80 *
Turbidity - NTUd * X
Color - PCU S.V. [LESS THEN OR EQUAL TO] 75 X *
Total Dissolved Solids - mg/l A-Avg. S.V. [LESS THEN OR EQUAL TO] 320 [LESS THEN OR EQUAL TO] 390 A-Avg. [LESS THEN OR EQUAL TO] 500 X X *
Chloride - mg/l A-Avg. S.V. [LESS THEN OR EQUAL TO] 13 [LESS THEN OR EQUAL TO] 19 S.V. [LESS THEN OR EQUAL TO] 250 X X * X
Sulfate - mg/l S.V. [LESS THEN OR EQUAL TO] 250 *
Sodium - SAR 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

* = The most restrictive beneficial use.

X = Beneficial use.

a Refer to NAC 445A.122 and 445A.1882 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 turbidity must not be more than 10 NTU above natural conditions.

Nev. Admin. Code § 445A.1902

Added to NAC by Environmental Comm'n by R160-06, eff. 8-26-2008

NRS 445A.425, 445A.520