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<br />Feet Above Sea Level <br />750 <br /> <br />500 <br /> <br />250 <br /> <br />260 <br /> <br />250 <br /> <br />240 <br /> <br />RESERVOIR IMPOUNDMENT CURVES <br />~ ,... <br /> <br />--- <br /> <br />--- <br /> <br />....- <br />--- <br /> <br />-..... <br />..... <br /> <br />SEP <br /> <br />OCT <br /> <br />...- <br />// <br /> <br />//' <br />// <br /> <br />NOV <br /> <br />\., <br /> <br />.....- <br />..... <br /> <br />'1 <br />~I <br />'- <br /> <br /> <br />, <br />I <br />I <br />~I <br />I <br /> <br />230 <br /> <br /> <br />--- <br /> <br />DEC <br /> <br />Figure 1. - Record of 1983 water-level changes and water discharges for Madden Lake and Gatun Lake compared with long-years <br />averages. Water levels are heights above sea level. <br /> <br />4 <br /> <br />Long~years <br />Average <br /> <br />220 <br />87 <br />86 <br />85 <br />84 <br />83 <br />82 <br />1000 JAN <br /> <br />--- <br /> <br />-- --- <br /> <br />FEB <br /> <br />MAR APR <br /> <br />MAY <br /> <br />JUN <br /> <br />JUL <br /> <br />AUG <br /> <br />750 <br />500 <br />250 <br /> <br />GATUN OUTFLOW (M.C.F) <br /> <br />