CEE 6640:GIS for Water Resources 11/23/2010 Naho Orita

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Presentation transcript:

CEE 6640:GIS for Water Resources 11/23/2010 Naho Orita Relationship between Logan Canyon Snowfall and the spring runoff in Logan River CEE 6640:GIS for Water Resources 11/23/2010 Naho Orita

Purpose of the study Prediction of the volume of runoff from previous water years snow water equivalent Runoff causes erosion, resulting in reduced crop productivity Important for the farmers in Cache Valley

INTRODUCTION Logan Canyon Logan River Located on North East corner of UT Logan River Irrigational use since 1890s, Recreational use Surface water & Ground water Avg.flow≈100 to 150 cfs Spring Runoff up to 1500 cfs

SNOTEL Sites & USGS gage

5 SNOTEL stations in Logan River watershed Tony Grove Lake (1978 to present) Temple Fork (2001 to present) USU Doc Daniel (2007 to present) Tony Grove Road Side (2009 to present) Klondike Narrows (2009 to present)

Statistics Linear Relationship April 1st data Average snow fall of the season Maximum snowfall of the water year

Conclusion & Future Work The max. precipitation seems to correlate with the volume of the spring runoff e.g. Tony Grove Lake st. Runoff (cfs)=33.65*maximum snow water equivalent of previous water year (in)- 448.3 Better prediction using all 5 stations Now we know how much …could we predict when?

QUESTIONS?