NHDPlus Applications—What is this good for? Two examples for today: West Virginia Chemical Spill NorWest Stream Temperature/Habitat Modeling More application examples: systems.com/NHDPlus/applications.php systems.com/NHDPlus/applications.php
West Virginia Chemical Spill Spill one mile upstream from water treatment plant Incident Command Tool for Drinking Water Protection (ICWater) used to warn downstream water suppliers Uses NHDPlus flows and velocities Adjusts with real-time gage data Provided accurate travel-time estimates Protected Cincinnati water supply and others
Model velocity Measured velocity Spill site Intake
Downstream trace Spill site
Intakes near Cincinnati 120 hours
>45,000,000 hourly records >15,000 unique stream sites >60 agencies $10,000,000
U.S. Department of the Interior U.S. Geological Survey Statistically Valid, Unbiased Information from Stream Databases r 2 = 0.68; RMSE = 1.54°C r 2 = 0.93; RMSE = 0.74°C Spatial Model Non-spatial Model Mean Summer Stream Temp Observed (°C) Predicted (°C) Non-spatial Stream Temp = – *Elevation (m) *Radiation *AirTemp (°C) – 0.17*Flow (m 3 /s) Spatial Stream Temp = – *Elevation (m) *Radiation *AirTemp (°C) – 0.11*Flow (m 3 /s) Isaak et al Ecol. Apps. 20: Parameter estimates are different because of autocorrelation in database 1:1 line
Climate Effects on Bull Trout Thermal Habitat Unsuitable Suitable Historic ( Average August) Clearwater R. Selway R. Lochsa R. Salmon R. < 11.0˚C
Climate Effects on Bull Trout Thermal Habitat +1.50˚C Stream Temp (~2040s) Clearwater R. Selway R. Lochsa R. Salmon R. Unsuitable Suitable < 11.0˚C
Climate Effects on Bull Trout Thermal Habitat +3.00˚C Stream Temp (~2080s) Clearwater R. Selway R. Lochsa R. Salmon R. Unsuitable Suitable < 11.0˚C
Strategic Prioritization of Habitat Restoration Maintaining/restoring flow… Maintaining/restoring riparian… Restoring channel form/function… Prescribed burns limit wildfire risks… Non-native species control… Improve/impede fish passage… Lots of things we can do… Low Priority High Priority But where to do it?