| Abstract: | Ground-water recharge is estimated as the residual component of a monthly water budget calculated using soil characteristics and long-term average rainfall, streamflow, irrigation, and pan-evaporation data. The water-budget components of rainfall, direct runoff, evapotranspiration, and ground-water recharge are defined seasonally, through the use of monthly data, and spatially by land-use and geohydrologic areas, through the use of a geographic information system model.
The long-term average ground-water recharge for the Iao area was estimated for four scenarios using natural land-use, and using 1926-79, 1980-85, and 1986-95 land-use and irrigation data. The recharge rate for natural conditions is 34 million gallons per day, which is 34 percent of rainfall. The average annual ground-water recharge rate for 1926-79 conditions is 51 million gallons per day, which is 41 percent of the sum of rainfall and irrigation. The recharge rates for 1980-85 and 1986-95 conditions are 40 and 36 million gallons per day, which are 37 and 35 percent of rainfall plus irrigation, respectively. |
| Genre: | USGS Numbered Series |
| ProdID: | 29679 |
| Citation Author: | Shade, Patricia J. |
| Citation Contributing Office: | USGS Pacific Islands Water Science Center |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | iv, 25 p. |
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| Citation Publisher: | Geological Survey (U.S.) |
| Citation Series: | Water-Resources Investigations Report |
| Citation Series Code: | WRI |
| Citation Series Number: | 97-4244 |
| Citation Search Results Text: | Water Budget for the Iao Area, Island of Maui, Hawaii; 1997; WRI; 97-4244; Shade, Patricia J. |
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| Citation Year: | 1997 |
| Type: | citation/reference |
| Text: | Water Budget for the Iao Area, Island of Maui, Hawaii; 1997; WRI; 97-4244; Shade, Patricia J. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/wri/1997/4244/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/wri/1997/4244/report.pdf |
| Date Other: | Sat, 1 Aug 1998 00:00 -0500 |
| Publisher: | Geological Survey (U.S.) |
