Nevada Administrative Code
Chapter 445A - Water Controls
WATER POLLUTION CONTROL
Standards for Water Quality
Section 445A.1686 - Truckee Region: Truckee River at East McCarran

Universal Citation: NV Admin Code 445A.1686
Current through September 16, 2024

The limits of this table apply to the body of water known as the Truckee River from Idlewild to the East McCarran Boulevard Bridge. This segment of the Truckee River is located in Washoe County.

STANDARDS OF WATER QUALITY

Truckee River at East McCarran

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 All life stages of mountain whitefish, rainbow trout and brown trout.
Temperature - °C [DELTA]Tb - °C DT = 0 S.V. Nov-Mar S.V. Apr-May S.V. Jun S.V. Jul S.V. Aug S.V. Sep-Oct [DELTA]T [LESS THEN OR EQUAL TO] 7 [LESS THEN OR EQUAL TO] 13 [LESS THEN OR EQUAL TO] 17 [LESS THEN OR EQUAL TO] 21 [LESS THEN OR EQUAL TO] 22 [LESS THEN OR EQUAL TO] 23 [LESS THEN OR EQUAL TO] 2 * X
pH - SU S.V. 7.0 - 8.5 S.V. [DELTA]pH 6.5 - 9.0 ± 0.5 X X X * X X *
Dissolved Oxygen - mg/l S.V. Nov-Mar S.V. Apr-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] 0.05 A-Avg. [LESS THEN OR EQUAL TO] 0.10 * * X X
Ortho Phosphate (as P) - mg/l S.V. [LESS THEN OR EQUAL TO] 0.02 S.V. [LESS THEN OR EQUAL TO] 0.05 * * X X
Nitrogen Species (as N) - mg/l Total Nitrogen Nitrate S.V. Nitrite S.V. [LESS THEN OR EQUAL TO] 2.0 [LESS THEN OR EQUAL TO] 0.04 * * X X
A-Avg. S.V. [LESS THEN OR EQUAL TO] 0.3 [LESS THEN OR EQUAL TO] 0.43
Total Ammonia (as N) - mg/l c *
Suspended Solids - mg/l A-Avg. [LESS THEN OR EQUAL TO] 15.0 S.V. [LESS THEN OR EQUAL TO] 25 *
Turbidity - NTU A-Avg. [LESS THEN OR EQUAL TO] 6.0 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] 90.0 [LESS THEN OR EQUAL TO] 120.0 A-Avg. [LESS THEN OR EQUAL TO] 500 X X *
Chloride - mg/l A-Avg. S.V. [LESS THEN OR EQUAL TO] 7.0 [LESS THEN OR EQUAL TO] 10.0 S.V. [LESS THEN OR EQUAL TO] 250 X X * X
Sulfate - mg/l A-Avg. S.V. [LESS THEN OR EQUAL TO] 7.0 [LESS THEN OR EQUAL TO] 8.0 S.V. [LESS THEN OR EQUAL TO] 250 *
Sodium - SAR A-Avg. S.V. [LESS THEN OR EQUAL TO] 0.5 [LESS THEN OR EQUAL TO] 0.6 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] 75.0 [LESS THEN OR EQUAL TO] 350.0 S.V. [LESS THEN OR EQUAL TO] 1,000 X * X X X
BOD - mg/l A-Avg. S.V. [LESS THEN OR EQUAL TO] 3.0 [LESS THEN OR EQUAL TO] 5.0 *

* = The most restrictive beneficial use.

X = Beneficial use.

a Refer to NAC 445A.122 and 445A.1622 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

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