Laurance Lake Reservoir Course Reservoir Course Project j - PowerPoint PPT Presentation

Laurance Lake Reservoir Course Reservoir Course Project j

Laurance Lake

Laurance Lake

Laurance Lake Laurance Lake

Laurance Lake - Irrigation Laurance Lake Irrigation � Built in 1968 for � Built in 1968 for Irrigation Storage: � Provides Irrigation to 2,590 hectares � Stores 3,565 acre feet at full pool at full pool � 48.5 hectares � Retrofitted offsite in � Retrofitted offsite in 1985 for hydro power production

Fi h Fish – Laurance Lake L L k � Fish present: � Bull trout ( Salvelinus confluentus) � Threatened � Threatened � Rainbow trout ( Oncorhynchus mykiss) � Wild rainbow � Early 70’s stocked with winter steelhead E l 70’ t k d ith i t t lh d � Stocked annually since 1978 with catchable rainbows � Cutthroat trout ( Oncorhynchus clarkii) C tth t t t ( O h h l kii) � Small mouth bass � Illegally introduced g y

Recreation Recreation Recreation Recreation � Camping � Fishing � Boating (non- motorized only) � Picnicking Pi i ki

Clean Water Act Temperature � Laurance Lake continually feeds water to MFID from the bottom of the reservoir. � Cold water is depleted by August or September and the temperature in Clear Branch below the dam is raised beyond the State’s standard. � 10°C

Endangered Species Act Endangered Species Act Bull trout � Bull trout ( Salvelinus confluentus) � Critical habitat C iti l h bit t � Clear Branch � Pinnacle Creek � Pinnacle Creek � Laurance Lake ?

Infrared Flight (FLIR) d Fli ht (FLIR) I f

Monitoring Sites Site ID Description CC Clear Creek above Reservoir PC Pinnacle Creek above Reservoir LL1 at Pinnacle Creek Branch LL2 LL2 near dam near dam LL3 , middle LL4 near upstream end

Model Choice: CE-QUAL-W2 River Basin Model Version 3 2- -D (vertical D (vertical- ( e t ca ( e t ca -longitudinal), unsteady finite difference longitudinal), unsteady finite difference o g tud o g tud a ), u steady a ), u steady te d te d e e ce e e ce model for hydrodynamics and water quality for rivers, model for hydrodynamics and water quality for rivers, reservoirs, lakes, estuaries supported by the reservoirs, lakes, estuaries supported by the Waterways Experiment Station Vicksburg MS USA Waterways Experiment Station Vicksburg MS USA Waterways Experiment Station, Vicksburg, MS, USA Waterways Experiment Station, Vicksburg, MS, USA Reservoir Branch Reservoir Branch Estuary Branch Estuary Branch River-Estuary Branch River-Estuary Branch x x x Slope=S=tan α Slope=S=tan α Tidal Tidal g g Boundary Boundary z z z condition condition u u u x x w w w w w α α u u u x x x z z w w w z z z

CE-QUAL-W2 Version 3 Water Quality Modeling Capabilities C Temperature, velocity (U, Temperature, velocity (U, Labile/refractory particulate Labile/refractory particulate � � � � W), Water surface elevation organic matter fractions TDS # different algal groups � � # A bit # Arbitrary Constituents C tit t # different periphyton groups # diff t i h t � � (such as bacteria, tracer, NH 4 -N � water age, toxics) PO 4 P PO 4 -P � # Inorganic suspended � NO 3 -N+NO 2 -N � solids groups Iron � labile and refractory labile and refractory � # CBOD groups � dissolved organic matter Alkalinity � groups pH and carbonate system pH and carbonate system � � Dissolved and particulate Dissolved and particulate � � silica Sediment Model (0 order, 1 st � order) Total inorganic carbon �

CE-QUAL-W2 Version 3.5 Q River Basin Reservoir Model 2-D longitudinal-vertical Model segment i vertical layers channel bottom bottom

Model Bathymetry – developed from Model Bathymetry developed from soundings and digitized drawing