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        Temperature

        The Bureau of Water Quality Planning of the Nevada Division of Environmental Protection (NDEP) has developed scientifically supported guidance for updating our temperature water quality standards in Nevada waters.  As NDEP reviews temperature standards throughout the state this guidence will be followed to establish proper temperature criteria for protection of aquatic life. 
        Brown Trout Photo
        For this effort, a Working Group consisting of fisheries biologists and other experts was formed to help in the development of the technical guidance to support future temperature standards review activities. While the efforts with the Working Group did not include any formal regulation adoption activities, the technical guidance developed by the group is used by NDEP to update temperature standards across the state.

        The following supporting documents have been developed to date:

        White Papers

        Guidance

        FINAL Guidance for Developing Temperature Criteria for Nevada Waters

        Species Thermal Tolerance Analyses for Juvenile and Adult Fish - Summer

        Summary of Thermal Tolerance Analyses and Recommendations - Coldwater

        Coldwater Fish Species

        Thermal Tolorance

        Recommendations

         

        Chronic (°C)

        Acute (°C)

        Salman and Trout Family - Salmonidae

         

         

        Bonneville Cutthroat Trout

        17

        22

        Brook Trout

        19*

        24*

        Brown Trout

        17*

        24*

        Bull Trout (juvenile rearing)

        none

        12*

        Bull Trout (adult foraging and migration)

        none

        16*

        Kokanee (Sockeye) Salmon

        18*

        22*

        Lahontan Cutthroat Trout

        17

        22

        Mackinaw (Lake) Trout

        16

        21

        Mountain Whitefish

        17

        22

        Rainbow Trout

        19*

        24*

        Redband Trout

        19

        24

        Yellowstone Cutthroat Trout

        17

        22

        Sculpin Family – Cottidae

         

         

        Mottled Sculpin

        none

        26

        *EPA recommendation

        DRAFT Summary of Thermal Tolerance Analyses and Recommendations - Coolwater/Warmwater

        Coolwater/Warmwater Fish Species

        Thermal Tolorance

        Recommendations

         

        Chronic (°C)

        Acute (°C)

        Carp and Minnow Family – Cyprindae

         

         

        Bonytail Chub

        29

        33

        Common Carp

        32

        37

        Fathead Minnow

        29

        32

        Northern Leatherside Chub

        27

        29

        Woundfin

        26

        33

        Live Bearers Family – Poeciliidae

         

         

        Western Mosquitofish

        32

        35

        Northern American Catfish Family – Ictaluridae

         

         

        Brown Bullhead

        30

        33

        Channel Catfish

        32*

        35*

        White Catfish

        32

        None

        Perch Family – Percidae

         

         

        Walleye

        25*

        30

        Yellow Perch

        29*

        30

        Sucker Family – Catostomidae

         

         

        Flannelmouth Sucker

        29

        32

        Mountain Sucker

        26

        28

        Razorback Sucker

        29

        33

        Sunfish Family – Centrarchidae

         

         

        Black Crappie

        27*

        32

        Bluegill Sunfish

        32*

        35*

        Green Sunfish

        31

        34

        Largemouth Bass

        32*

        34*

        Pumpkinseed Sunfish

        31

        33

        Redear Sunfish

        29

        31

        Smallmouth Bass

        29*

        31

        Spotted Bass

        32

        None

        White Crappie

        28*

        31

        Temperate Bass Family – Moronidae

         

         

        Striped Bass

        30

        32

        White Bass

        30

        31

        Wiper

        30

        31

        *EPA recommendation

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