SUMMARY OF COLUMBIA RIVER FLOOD CONTROL DATA 1 MAR 1998 MCDB ARDB LIB DCDB HGH GCL BRN DWR DWR PROJECT LIMITS Maximum El. MSL 2475.0 1444.0 2459.0 1892.0 3560.0 1290.0 2077.0 1600.0 Minimum El. MSL 2320.0 1378.0 2287.0 1794.2 3336.0 1208.0 1976.0 1445.0 Usable stor.KAF 12053.3 7100.0 4979.5 1398.6 2982.0 5185.5 975.4 2015.8 Usable stor.KSFD 6076.9 3579.6 2510.5 705.0 1503.4 2614.4 491.7 1016.4 CURRENT, 28-9 FEB. Elevation MSL 2408.4 1403.9 2392.7 1807.5 3509.5 1254.1 2051.8 1524.3 Draft KAF 6390 4691 2612 1272 1072 2627 321 1173 TO MEET 31 MAR F.C. 15 MAR Feet 0.0 2.8 0.0 0.0 0.0 0.0 2.6 0.0 Kaf 0.0 289.1 0.0 0.0 0.0 0.0 28.9 0.0 Ksfd 0.0 145.8 0.0 0.0 0.0 0.0 14.6 0.0 Cfs over inflow 0 4703 0 0 0 0 470 0 FORECASTS, KAF ------- Apr-Jul mp na na na na na na 5250 1810 Apr-Jul % na na na na na na 91% 67% Apr-Jul change na na na na na na 170 -142 Apr-Aug mp 9989 21269 5052 1940 na 52300 na na Apr-Aug % 87% 91% 79% 94% na 86% na na Apr-Aug change -599 -926 -613 -89 na -3100 na na May-Sep mp na na na na 1421 na na na May-Sep % na na na na 74% na na na May-Sep change na na na na -233 na na na FLOOD CONTROL LRC,/a. Drafts, KAF Mar 15 na na 1918 na na na na na na Mar 31 2030 4980 1918 1210 603 537 350 393 368 Apr 15 2030 4980 na 1210 703 537 250 286 182 Apr 30 2030 4980 na 1210 803 1529 150 na na Elevations MSL Mar 15 na na 2413.2 na na na na na na Mar 31 na 1401.1 2413.2 1812.9 3533.1 1283.3 2049.1 1578.0 1579.4 Apr 15 na1401.1 na 1812.9 3528.3 1283.3 2057.9 1584.2 1590.2 Apr 30 na1401.1 na 1812.9 3523.4 1270.0 2066.1 na na FLOOD CONTROL Drafts, KAF shifted urc's, /b. Mar 31 na na na na na 912 0 368 Apr 15 na na na na na 891 0 182 Elevations MSL Mar 31 na na na na na 1278.4 2077.0 1579.4 Apr 15 na na na na na 1278.7 2077.0 1590.2 SHIFT POTENTIAL,KA 1/ 2/ 3/ 4/ 1/ DWR SYS F.C. MINUS LOC F.C. ie POTENTIAL STORAGE SHIFT TO GCL. Mar 31 25 562 912 4602 2/ GCL F.C. PLUS 1/. Apr 15 104 641 891 4602 3/ BRN F.C. PLUS 2/. Apr 30 NO SHIFT ALLOWED BY 30 APRIL 4/ MAXIMUM TOTAL THAT 2/ or 3/ CAN ADD UP TO. ============================================================================================ AT THE DALLES Peak to volume unreg, Apr-Aug mp 79500 82.9% storage 470 KCFS. Apr-Aug change -3800 correction Initial controlled flow- May-Aug mp 68121 20202 KAF (ICF) 297 KCFS ============================================================================================ /a. LRC is DWORSHAK LOCAL RULE CURVE. /b. Under certain conditions, the GCL, BRN and DWR rule curves may be "shifted". The rule curves shown are the "maximun" allowable. All or part of the "max" volume may be "shifted". DWR has priority over BRN if all volume can't be shifted. "shifts" will be determined on a case by case basis, from year to year, and month to month. Questions? Russ Morrow, 503-808-3951 or Bruce Glabau, 503-808-3950