Water-Budget Analysis of the Upper Big Sandy Alluvial Aquifer

Science Center Objects

The Upper Big Sandy Groundwater Management District is concerned with potentially declining groundwater levels and thus available groundwater in storage for the Upper Big Sandy alluvial aquifer in eastern Colorado

This project evaluated changes in groundwater storage within the Upper Big Sandy Designated Groundwater Basin by updating water-budget results for the alluvial aquifer from the Denver Basin model and provided best estimates for the major water-budget components, including groundwater storage. 

 

Approach

  • Compute a basin-specific water budget for the Upper Big Sandy alluvial aquifer from the Denver Basin model using a modeling tool called ZONEBUDGET. 
  • Refine estimates for flow into and out of the Upper Big Sandy alluvial aquifer with available data. 
  • Provide best estimates for the major water-budget components, including groundwater storage in the Upper Big Sandy alluvial aquifer.

Objectives:

The objective of this project is to evaluate changes in groundwater storage within the Upper Big Sandy Designated Groundwater Basin by updating water-budget results for the alluvial aquifer from the Denver Basin model and providing best estimates for the major water-budget components, including groundwater storage.