| Abstract: | Ponape is the third largest island in the western Pacific, with a land area of 129 square miles. The island is volcanic, nearly circular in shape, and covered with lush tropical vegetation. The mountainous interior has the highest peaks in the western Pacific. Annual rainfall at Kolonia and other coastal areas is 191 inches. Inland at higher elevations, the rainfall is considerably higher. The upper Nanpil River basin averages about 340 inches annually. Runoff-to-rainfall ratios for Ponapean streams show that about two thirds of the rain falling on the island runs off. Flow-duration curves show the similarity of the geology, vegetation, and rainfall of the drainage basins and indicate little ground-water contribution to surface runoff. Surface-water quality is excellent as shown by 53 chemical anlyses of water from 19 streams. Water of the Nanpil River, the source of water for the central water system, is especially low in dissolved elements and solids. This report summarizes in one volume all the hydrologic data collected and provides analyses that may be used by planning and public works officials as a basis for making decisions on the development and management of their water resources. (USGS) |
| Genre: | USGS Numbered Series |
| ProdID: | 30275 |
| Citation Author: | Van der Brug, Otto |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | xiii, 171 p. :ill., maps ;28 cm. |
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| Citation Publisher: | U.S. Geological Survey, WRD, |
| Citation Series: | Water-Resources Investigations Report |
| Citation Series Code: | WRI |
| Citation Series Number: | 83-4139 |
| Citation Search Results Text: | Water resources of Ponape, Caroline Islands; 1984; WRI; 83-4139; Van der Brug, Otto |
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| Citation Year: | 1984 |
| Type: | citation/reference |
| Text: | Water resources of Ponape, Caroline Islands; 1984; WRI; 83-4139; Van der Brug, Otto |
| URL (THUMBNAIL): | http://pubs.usgs.gov/wri/1983/4139/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/wri/1983/4139/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, WRD, |
