|
||||
Publications—Scientific Investigations Report |
By Robert W. Dudley and Gregory J. Stewart
U.S. Geological Survey Scientific Investigations Report 2006–5268
AVAILABLE ONLINE ONLY
The body of the report is available in PDF Format ( 1,109 KB)
Surface-water data collected at two streamflow-gaging stations on the Pleasant River were analyzed to determine whether ground-water withdrawals from an irrigation well near the Pleasant River have affected streamflows. The relation between the stream-stage data from the two stations shows that stream stage on days when the well was pumped differs from stream stage on days with no pumping, indicating that short-term streamflow depletion occurred. The linear relation defining the relation of stage at the two gaging stations during periods of pumping is significantly different from the linear relation defining the relation of stage at the same two stations during periods of no pumping. The difference between the two linear relations was used to estimate how much short-term streamflow depletion is coincident with ground-water withdrawals. Estimated short-term streamflow depletion varies with stage and ranges from approximately 0.3 to 0.8 cubic feet per second; the relative short-term streamflow depletion ranges from approximately 1.7 to 10 percent.
Abstract
Introduction
Description of the Pleasant River Basin
Climate
Streamflow
Surficial Geology
Ground-Water/Surface-Water Interaction
Methods of Study
Collection of Data
Consideration of Limitations of the Data
Statistical Analyses of the Data
Effects of Ground-Water Withdrawals on Streamwater Levels
Summary and Conclusions
References Cited
1. Map showing:
2-6. Graphs showing:
2. | Median monthly flows for USGS streamflow-gaging station 01022260 on the Pleasant River near Epping, Maine |
3. | Four-hour mean stream-stage data for streamflow-gaging stations 01022210 and 01022220 on the Pleasant River near Crebo Flat, Maine, July 1 to September 30, 2005. |
4. | Line of organic correlation (LOC) between stream-stage data for streamflow- gaging stations 01022210 and 01022220 on the Pleasant River, Maine. |
5. | (A) Four-hour stream-stage data from streamflow-gaging station 01022210 on the Pleasant River and average daily precipitation data recorded at National Weather Service stations in Wesley and Beddington, Maine; and (B) Residuals from the line of organic correlation of 4-hour mean stream-stage data for streamflow-gaging stations 01022210 and 01022220 on the Pleasant River, Maine, and daily withdrawals from an irrigation well, July 1 to September 30, 2005. |
6. | Lines of organic correlation defining stream-stage relations between streamflow-gaging stations 01022210 and 01022220 on the Pleasant River near Crebo Flat, Maine, July 1 to September 30, 2005. |
If you have Adobe® Acrobat® or Adobe® Acrobat® Reader® installed on your computer, you may view and print the PDF version of this report. Acrobat Reader, is a free download from Adobe Systems, Inc. Users with disabilities can view information concerning accessibility at access.Adobe.com .
For further information, contact:
Robert Lent, Director
U.S. Geological Survey,
Maine Water Science Center
196 Whitten Road
Augusta, Maine 04330
or visit our Web site at: http://me.water.usgs.gov/.