Flow Prediction on the Yampa River

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Presentation transcript:

Flow Prediction on the Yampa River BY: Trevor Price

Yampa River - Wild River

Downstream Flooding (2011)

Peak Flow Prediction to Prevent Flooding

Peak Flow – Yampa River Preventitive Flood Action Reservoir Storage Sandbag Dikes, etc.

Objective Predict the Peak Flow for the Yampa River Define the Study Area Collect Data Interpolate Snow Water Equivalent (SWE) data Determine Runoff Ratio Relationship Determine SWE vs Peak Flow Relationship

Study Area (StreamStats)

Study Area imported into GIS

ArcGIS Toolbox: Clip (Analysis) HUC 8 Watersheds ArcGIS Toolbox: Clip (Analysis) HUC 8 Watershed Area (sq.mi.) Upper Yampa 2590 Lower Yampa 1550 Little Snake 3060 Muddy 1010

Digital Elevation Model (DEM) ArcGIS Toolbox: Mosiac (Data Management)

Digital Elevation Model (DEM) ArcGIS Toolbox: Mosiac (Data Management)

ArcGIS Toolbox: Clip (Analysis) Stream Gages ArcGIS Toolbox: Clip (Analysis)

SNOTEL Sites Snow Water Equivalent (SWE) 18 Sites Near and Within Yampa River Basin

Work in Progress Interpolate SWE data Find average SWE for the watershed Determine Runoff Ratio Relationship Using SWE and Stream Gages Determine SWE vs Peak Flow Relationship This will be used to estimate the peak flow for any given year.

Uncertainties Storm Patterns Snow Drifting (Due to Wind) Land Cover (Vegetation) Slope of Land Direction of Slope (Facing Sun) Climate (Melting Rate)

???Questions???