Nev. Admin. Code § 445A.2147

Current through November 8, 2024

Section 445A.2147 - Colorado Region: Lake Mohave

The limits of this table apply to the body of water known as Lake Mohave, which extends from Willow Beach to Davis Dam. Lake Mohave is located in Clark County.

STANDARDS OF WATER QUALITY

Colorado River: Lake Mohave

PARAMETER

REQUIREMENTS TO MAINTAIN EXISTING HIGHER QUALITY

WATER QUALITY CRITERIA TO PROTECT BENEFICIAL USES

Beneficial Usesa

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

Adult cold-water fishery.

Temperature -°C [DELTA]Tb - °C

[DELTA]T = 0

S.V. [LESS THAN EQUAL TOO]24 [DELTA]T [LESS THAN EQUAL TOO] 2

*

pH - SU

S.V.6.5 - [DELTA]pH 9.0 ± 0.5

*

Dissolved Oxygen - mg/L

S.V. [GREATER THAN EQUAL TOO] 5.0c

*

Total Phosphorus (as P) - mg/L

A-Avg. [LESS THAN EQUAL TOO] 0.05

*

*

Nitrate (as N) - mg/L

S.V. [LESS THAN EQUAL TOO] 10

*

Nitrite (as N) - mg/L

S.V. [LESS THAN EQUAL TOO] 0.06

*

Total Ammonia (as N) - mg/L

d

*

Total Suspended Solids - mg/L

S.V. [LESS THAN EQUAL TOO] 25

*

Turbidity - NTU

S.V. [LESS THAN EQUAL TOO] 10

*

Color - PCU

S.V. [LESS THAN EQUAL TOO] 75

*

Total Dissolved Solids - mg/L

e

*

Chloride - mg/L

S.V. [LESS THAN EQUAL TOO] 400e

*

Sulfate - mg/L

S.V. [LESS THAN EQUAL TOO] 500e

*

Alkalinity (as CaCO3) - mg/L

S.V. [GREATER THAN EQUAL TOO] 20

*

E. coli - cfu/100 mLf

G.M. [LESS THAN EQUAL TOO] 126 S.V. [LESS THAN EQUAL TOO] 410

*

Fecal Coliform - No./100 mL

S.V. [LESS THAN EQUAL TOO] 1,000

*

Toxic Materials

g

* = The most restrictive beneficial use.

X = Beneficial use.

^a Refer to NAC 445A.122 and 445A.2142 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 Applies to the epilimnion when stratified, or average in water column during periods of nonstratification.

^d The water quality criteria for ammonia are specified in NAC 445A.118.

^e The salinity standards for the Colorado River system are specified in NAC 445A.1233.

^f The geometric mean must not be exceeded in any 30-day period. The single value must not be exceeded in more than 10 percent of the samples collected within any 30-day period.

^g The water quality criteria for toxic materials are specified in NAC 445A.1236

Nev. Admin. Code § 445A.2147

Added to NAC by Environmental Comm'n by R037-19, eff. 10/30/2019

NRS 445A.425, 445A.520