| Abstract: | The Yap Islands consist of four major islands, Yap, Gagil-Tamil, Maap, and Rumung. Of these, Yap Island has more than half the total land area, most of the population, and almost all of the economic development. The islands of Maap and Rumung together compose only 15 percent of the land area and population. Average annual rainfall over the Yap Islands amounts to 122 inches. Rainfall-runoff comparisons indicate that about half of the annual rainfall runs off to the ocean on Yap Island and Gagil-Tamil. Streams on Gagil-Tamil are perennial but streams on Yap Island are dry an average of 3 months per year due to geologic differences.
Analyses of water samples from 23 sources show the good quality and the chemical similarity of surface and ground water. This report summarizes the hydrologic data collected and provides interpretations that can be used by the planning and public works officials of Yap to make decisions concerning development and management of their water resources. |
| Genre: | USGS Numbered Series |
| ProdID: | 11505 |
| Citation Author: | Van der Brug, Otto |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | xv, 233p. :ill., maps ;28 cm. |
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| Citation Publisher: | U.S. Geological Survey, |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 82-357 |
| Citation Search Results Text: | Preliminary evaluation of the water resources of Yap and Gagil-Tomil islands, western Pacific; 1984; OFR; 82-357; Van der Brug, Otto |
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| Citation Year: | 1984 |
| Type: | citation/reference |
| Text: | Preliminary evaluation of the water resources of Yap and Gagil-Tomil islands, western Pacific; 1984; OFR; 82-357; Van der Brug, Otto |
| URL (THUMBNAIL): | http://pubs.usgs.gov/of/1982/0357/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/of/1982/0357/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, |
