- What if Wells are not Continuously Pumping?
examples (in the "Response Functions-
What are They?") illustrated how response functions can be developed
and used when wells are operating continuously. In reality, however, this
is seldom the case. We need to be able to evaluate stream depletion from
wells that are used intermittently. Response functions can be determined
for wells that are pumped for a brief period and then turned off. The procedure
is described in the section "How are Response
are pumped for a brief period may produce very minor stream depletion effects
that persist long after pumping has ceased. The accompanying graph shows
that pumping at a rate of 1 cfs has greatly attenuated effects on a hydraulically
connected stream reach. Although the illustration is hypothetical, it
is important to recognize that ground water pumping impacts may persist for
years or even decades into the future, depending upon the scale and properties
of the system.
Information supplied by Idaho
Water Resource Research Institute, University of Idaho December 1998
Authors: Dr. Gary Johnson, Donna Cosgrove, and Mark Lovell.
Graphics: Sherry Laney and Mark Lovell of Idaho Water Resources Research Institute.
All State of Idaho images and graphics created with GIS files obtained through
Idaho Department of Water Resources Public Domain GIS unless otherwise noted.