Impact of sewerage systems on stream base flow and ground-water recharge on Long Island, New York
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Abstract
Statistically significant decreases in the ratio of base flow to total flow of streams along the south shore of Long Island, N.Y., are due to the use of expanding storm-sewer and sanitary-sewer networks. Base-flow losses due to sewering ranging from virtually none at Connetquot River (largely unaffected by urban development) to 211 liters per second, or a 60-percent decrease below natural levels, during 1965-74 at East Meadow Brook (which drains part of highly urbanized Nassau County). Nearly 75 percent of the baseflow loss at East Meadow Brook during 1965-74 was caused by a network of sanitary sewers west of the stream; the remainder resulted from loss of recharge in areas serviced by stream-directed storm sewers. In areas of the Carlls River basin serviced by stream-directed storm sewers, recharge depletion averaged only about 4 liter per second per square kilometer whereas in the more intensely urbanized East Meadow Brook basin, recharge depletion in such areas averaged 18 (L/s)/km2.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Impact of sewerage systems on stream base flow and ground-water recharge on Long Island, New York |
| Series title | Journal of Research of the U.S. Geological Survey |
| Volume | 6 |
| Issue | 2 |
| Year Published | 1978 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Description | 9 p. |
| First page | 263 |
| Last page | 271 |
| Country | United States |
| State | New York |
| Other Geospatial | Freeport Sewer District, Long Island, Nassau County Sewer District |
| Google Analytic Metrics | Metrics page |