Nev. Admin. Code § 445A.1886 - Walker Region: Walker River, West Fork at the state line

The limits of this table apply to the body of water known as the West Fork of the Walker River at the California-Nevada state line. This segment of the West Fork of the Walker River is located in Douglas County.

STANDARDS OF WATER QUALITY

Walker River, West Fork at the state line

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

S.V. Jul-Oct [DELTA]T

<= 22 = 0

S.V. Nov-Apr S.V. May-Jun S.V. Jul-Oct [DELTA]T

<= 13 <= 17 <= 23 <= 2

*

X

pH - SU

S.V. DpH

6.5 - 9.0 ± 0.5

X

X

*

*

X

X

X

Dissolved Oxygen - mg/l

S.V. Nov-May S.V. Jun-Oct

>= 6.0 >= 5.0

X

*

X

X

X

X

Total Phosphates (as P) - mg/l

A-Avg.

<= 0.1

*

*

X

X

Nitrogen Species (as N) - mg/l

Total Nitrogen

Nitrate S.V. Nitrite S.V.

<= 10 <= 0.06

X

*

X

X

*

X

A-Avg. S.V.

<= 0.6 <= 0.9

Total Ammonia (as N) - mg/l

c

*

Suspended Solids - mg/l

A-Avg.

<= 60

S.V.

<= 80

*

Turbidity - NTU

d

*

X

Color - PCU

S.V.

<= 26

S.V.

<= 75

X

*

Total Dissolved Solids - mg/l

A-Avg. S.V.

<= 165 <= 220

A-Avg.

<= 500

X

X

*

Chloride - mg/l

A-Avg. S.V.

<= 15 <= 20

S.V.

<= 250

X

X

*

X

Sulfate - mg/l

S.V.

<= 25

S.V.

<= 250

*

Sodium - SAR

A-Avg.

<= 8

*

X

Alkalinity (as CaCO3) - mg/l

25% change from natural conditions

*

X

E. coli - No./100 ml

A.G.M. S.V.

<= 126 <= 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.

Notes

Nev. Admin. Code § 445A.1886

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

NRS 445A.425, 445A.520