| Abstract: | The glacial deposits underlying a 260-square-mile area near Logansport, Indiana, range in thickness from 0 to 300 feet and consist of three semiconfined sand and gravel aquifer units separated and overlain by three semiconfining till units. The ground-water development potential of the two uppermost aquifers , whose thicknesses average about 20 feet each, is limited to domestic usage. However, a sand and gravel aquifer (0 to 120 feet in thickness) filling the bottom of the buried, preglacial Teays Valley probably has considerable development potential. Maximum and average transmissivities of the aquifer are about 38 ,000 and 13,000 square feet per day, respectively. The natural ground-water-flow system has not been significantly altered by development. Model simulation of the present system demonstrates that most of the water flowing through the glacial deposits originates within the study area as infiltrating precipitation and discharges locally into the major streams. Results of simulation of a withdrawal of 10 million gallons per day from the lower sand and gravel aquifer indicate an absence of hydrologic constraints to development of the quantities of ground water simulated in the model. However, model simulations of water-level declines of as much as 35 feet in the lower aquifer and 20 feet in the upper aquifer indicate that interference with the operation of domestic wells is likely. Model results also indicate that ground-water development similar to that simulated may cause streamflow to be reduced by only a small percentage. (USGS) |
| Genre: | USGS Numbered Series |
| ProdID: | 27311 |
| Citation Author: | Gillies, Daniel C. |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | - |
| Citation Editor: | |
| Citation End Page: | |
| Citation Issue: | |
| Citation Keywords: | |
| Citation Language: | ENGLISH |
| Citation Larger Work Title: | |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | vi, 98 p. :ill., maps ;28 cm. |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | U.S. Geological Survey, Water Resources Division, |
| Citation Series: | Water-Resources Investigations Report |
| Citation Series Code: | WRI |
| Citation Series Number: | 81-7 |
| Citation Search Results Text: | Ground-water potential of the glacial deposits near Logansport, Cass County, Indiana; 1981; WRI; 81-7; Gillies, Daniel C. |
| Citation Start Page: | |
| Citation Volume: | |
| Citation Year: | 1981 |
| Type: | citation/reference |
| Text: | Ground-water potential of the glacial deposits near Logansport, Cass County, Indiana; 1981; WRI; 81-7; Gillies, Daniel C. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, Water Resources Division, |
