Nevada Administrative Code
Chapter 445A - Water Controls
WATER POLLUTION CONTROL
Standards for Water Quality
Section 445A.1914 - Walker Region: Walker Lake

Universal Citation: NV Admin Code 445A.1914
Current through September 16, 2024

The limits of this table apply to the entire body of water known as Walker Lake. Walker Lake is located in Mineral County.

STANDARDS OF WATER QUALITY

Walker Lake

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
Aquatic Life Species of Concern Tui chub, Tahoe sucker, and adult and juvenile Lahontan cutthroat trout.
Temperature - °C [DELTA]Tb - °C [DELTA]T [LESS THEN OR EQUAL TO] 2 *
pH - SU S.V. 6.5 - 9.7 * X X
Dissolved Oxygen - mg/l S.V. [GREATER THEN OR EQUAL TO] 5d * X X X
Total Phosphates (as P) - mg/l S.V. [LESS THEN OR EQUAL TO] 0.82 *
Nitrogen Species (as N) - mg/l Total Inorganic Nitrogen Nitrate S.V. Nitrite S.V. [LESS THEN OR EQUAL TO] 90 [LESS THEN OR EQUAL TO] 0.06 * X
S.V. [LESS THEN OR EQUAL TO] 0.3
Total Ammonia (as N) - mg/l c *
Suspended Solids - mg/l S.V. [LESS THEN OR EQUAL TO] 25 *
E. coli - No./100 ml A.G.M. S.V. [LESS THEN OR EQUAL TO] 126 [LESS THEN OR EQUAL TO] 235 * 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.

c The ambient water quality criteria for ammonia are specified in NAC 445A.118.

d When lake is stratified, the dissolved oxygen applies only to the epilimnion.

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

NRS 445A.425, 445A.520

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