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Effect of simulated tree canopy removal on a municipal wellfield in the Puget Sound aquifer system, Thurston County, Washington

Open-File Report 2013-1291

Prepared in cooperation with the Washington State Department of Natural Resources and the City of Olympia
By:
DOI: 10.3133/ofr20131291

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Abstract

Effects of tree canopy removal on a wellfield were simulated using a groundwater flow model characteristic of hydrogeologic settings in the Puget Sound aquifer system. Effects were estimated according to simulated changes in flow patterns that may result from tree canopy removal associated with varying degrees of residential development. The flow model used was a modified version of a model of the hydrogeologic setting in Thurston County, Washington; the wellfield was one planned for Olympia, Washington, and the canopy modifications spanned a range of possible land use change scenarios. The relative effects of tree canopy removal were estimated in terms of potential changes in capture zones for the wellfield and groundwater levels. Because of the depth of the wellfield and the dispersal of the effects from changes in recharge at ground surface, potential changes in wellfield capture zones and groundwater levels were discernible but small compared to other possible influences.

Study Area

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Effect of simulated tree canopy removal on a municipal wellfield in the Puget Sound aquifer system, Thurston County, Washington
Series title:
Open-File Report
Series number:
2013-1291
DOI:
10.3133/ofr20131291
Year Published:
2013
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
Washington Water Science Center
Description:
vi, 32 p.
Country:
United States
State:
Washington
County:
Thurston County
City:
Olympia
Other Geospatial:
Puget Sound
Datum:
North American Datum 1983
Projection:
Lambert Conformal Conic Projection
Scale:
24000
Online Only (Y/N):
Y