Nevada Administrative Code (Last Updated: January 6, 2015) |
Chapter445A Water Controls |
WATER POLLUTION CONTROL |
Standards for Water Quality |
NAC445A.1356. Snake Region: Owyhee River, below Mill Creek.
- The limits of this table apply to the body of water known as the Owyhee River from its confluence with Mill Creek to the border of the Duck Valley Indian Reservation. This segment of the Owyhee River is located in Elko County.
STANDARDS OF WATER QUALITY
Owyhee River, below Mill Creek
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
Temperature - °C
ΔTb - °C
ΔT
= 0
S.V. May-Oct
S.V. Nov-Apr
ΔT
< 21
< 7
< 1
*
X
pH - SU
ΔpH
±0.5
S.V.
6.5 - 9.0
*
X
X
Dissolved Oxygen - mg/l
S.V.
≥ 6.0
X
*
X
X
X
X
Total Phosphorus
(as P) - mg/l
S.V.
≤ 0.1
*
*
X
X
Nitrogen Species
(as N) - mg/l
Nitrate S.V.
≤ 1.0
Nitrate S.V.
Nitrite S.V.
≤ 10
≤ 0.06
*
X
X
*
Total Ammonia
(as N) - mg/l
c
*
Suspended
Solids - mg/l
S.V.
≤ 25
*
X
Turbidity - NTU
S.V.
≤ 10
*
X
Color - PCU
S.V.
≤ 75
*
Total Dissolved
Solids - mg/l
S.V.
≤ 250
S.V.
≤ 500
X
X
*
Chloride - mg/l
S.V.
≤ 8.0
S.V.
≤ 250
X
X
*
X
Sulfate - mg/l
S.V.
≤ 250
*
Alkalinity
(as CO3) - mg/l
< 25% change from natural conditions
*
X
E. coli - No./100 ml
A.G.M.
S.V.
≤ 126
≤ 410
*
X
Fecal Coliform -
No./100 ml
S.V.
≤ 125
S.V.
≤ 1,000
X
*
X
X
X
* = The most restrictive beneficial use.
X = Beneficial use.
a Refer to NAC 445A.122 and 445A.1332 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.
(Added to NAC by Environmental Comm’n by R160-06, eff. 8-26-2008; A by R133-10, 12-16-2010; R131-12, 12-20-2012)