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<br />Th~ normal stocage is u"<1ally that ~>lri~g the irrlg~~lon season.
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<br />The. ,."xlrn.\l," 3ratage is the storage at the da", to~.
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<br />Surcharg~ storage is the volume
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<br />available in the space bet~ccn the noroal storage and th~ ~ximum stor-
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<br />age.
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<br />In the table, surcharge stora.g" volume is e~press"d in tnehe5 of
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<br />rUllOff froJ:l the dra1~"g" basIn. On", in~h of runoff horn. one square
<br />~ile 1s 640~12-53.3 acre-feet.
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<br />In table 12, the "condition" column refeu to.. general assessment
<br />of the stabil1rysod/or nare of ",aintenanc<! of th<! dalll structures. A
<br />da",mightbe lngood phys.tCal condition a;'\d stl11 be too small to deal
<br />with large floods. The sp..ctHcdefects for a parttcular darn are in-
<br />dlcatedlnthe"Princ1palRecornmendations"colu"n. The "Ohservations
<br />DuringE"cess Rain" column sIJgllests>lhere attentioo should be direcr ed
<br />during heavy rains; thts is Msed on the Hndtngs of the d"", inspec-
<br />rions. All dams are of earthftll construction and all spillways are
<br />earthcIJtunle.sotherlo'isenoted.
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<br />Table lZ also provides an tndication of the hydrologtc capability
<br />of the inapected d"OlS' Hydrologic capability. III thIs conte"t, <ehr.
<br />to the ability of a dam to pas. large floods without o~ettopptng of the
<br />main embankment. A da~ that Can store and/or pass a probable ,""xlOllJm
<br />flood ~lthout being over~opped has" hydrologic capability designated
<br />as"ad"quate." To determIne the hydrolo!,\ic capa;,illty, othnrflooda
<br />are anullIed to OCCl1r at the dama. Each flood haa the aa"",. hydrograph
<br />(dtacharge ~e"'""S time relationship at a .given l"c.ation). Ho~'cver. the
<br />diachargesare reduced tovarytng petccntagea of the PMf discharge. A
<br />
<br />dB'" that c.." p..... .. 11"",,] "avI.,,, .. oJ.lgnitt;ce cf SO ;>cr~cr.t of t"c." PMF.
<br />
<br />but l~"" th~n 100 percent of the PMf is termed "tnadequate." U..LOS that
<br />can\lot paaa a f lood ha~1ng " magnltude .,f 50 percent ,j[ ~hc P:1F ar"
<br />terTIl('d"seriollsly tnad".qIJate."
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