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| Figure 4. Change in level A from Oct 1 to Oct 1 versus precipitation for period 1962-1988. Correlation line uses precipitation as independent variable. |
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| Figure 5. Precipitation versus change in level A from Oct I to Oct 1 for period 1962-1988. Correlation line uses change in level as independent variable. |
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| Figure 6. Water level for Crater Lake (above 1882.14 m elevation) and precipitation at Park Headquarters. Water year is Oct 1 to Sep 30. Water levels shown by broken lines calculated using equation (6) from measured precipitation values. |
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| Figure 7. Precipitation at North Rim gage versus that at Park Headquarters for July 1 – Jun 30 water year for 1964-88 time period. Correlation line calculated assuming that line passes though 0. Precipitation data for North Rim gage from National Oceanic and Atmospheric Administration (1966-77) and unpublished records of U.S. Geological Survey. |
