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The Web-Based STRMDEPL08 evaluates four analytical solutions that simulate streamflow depletion by a nearby pumping well. It is based on STRMDEPL08 (Reeves, 2008) and the earlier STRMDEPL (Barlow, 2000). These two earlier programs are written in Fortran, require text input files, and produce tabular output. The web-based version was written to provide an easier interface to the analytical solutions with more convenient units and simplified output. The major feature of the earlier codes not reproduced in the web version is the ability to analyze a time series of changing pumping rates. The four analytical solutions describe (1) pumping from an aquifer with a stream that fully penetrates the aquifer with no streambed resistance between the stream and the aquifer (Glover and Balmer, 1954; Jenkins, 1968), (2) pumping from an aquifer with a stream that fully penetrates the aquifer with streambed resistance between the stream and the aquifer (Hantush, 1965), (3) pumping from an aquifer with a partially penetrating stream with streambed resistance (Hunt, 1999), and (4) pumping from a leaky aquifer with a stream in the overlying aquitard (Hunt, 2003). See the documentation of STRMDEPL08 for more discussion of the required input data. The units for input data are fixed as noted in the input boxes, and the output is given as a table of days of pumping and streamflow depletion in cubic feet per second.

Barlow, P.M., 2000, Documentation of computer program STRMDEPL - A program to calculate streamflow depletion by wells using analytical solutions, in Zarriello, P.J., and Ries, K.G., III, A precipitation-runoff model for analysis of the effects of water withdrawals on streamflow, Ipswich River Basin, Massachusetts: U.S. Geological Survey Water-Resources Investigations Report 00-4029, p. 77-89. (

Bruen, M.P., and Osman, Y.Z., 2004, Sensitivity of stream aquifer seepage to spatial variability of the saturated hydraulic conductivity of the aquifer: Journal of Hydrology, v. 293, no. 1-4, p. 289-302.

Glover, R.E., and Balmer, G.G., 1954, River depletion resulting from pumping a well near a river: Transactions, American Geophysical Union, v. 35, no. 3, p. 468-470.

Hantush, M.S., 1965, Wells near streams with semipervious beds: Journal of Geophysical Research, v. 70, no. 12, p. 2829-2838.

Hunt, Bruce, 1999, Unsteady stream depletion from ground water pumping: Ground Water, v. 37, no. 1, p. 98-102.

Hunt, Bruce, 2003, Unsteady stream depletion when pumping from semiconfined aquifer: Journal of Hydrologic Engineering, v. 8, no. 1, p. 12-19.

Jenkins, C.T., 1968, Computation of rate and volume of stream depletion by wells: U.S. Geological Survey Techniques of Water-Resources Investigations, book 4, chap. D1, 17 p.

Reeves, H.W., 2008, STRMDEPL08—An extended version of STRMDEPL with additional analytical solutions to calculate streamflow depletion by nearby pumping wells: U.S. Geological Survey Open-File Report 2008—1166, 22 p. (

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