SUMMARY OF COLUMBIA RIVER FLOOD CONTROL DATA 1 FEB 1999 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, 31 JAN. Elevation MSL 2405.6 1418.6 2374.5 1797.9 3514.4 1263.9 2054.8 1520.5 Draft KAF 6618.6 3103.6 3135.5 1368.4 979.8 1962.1 286.6 1223.4 TO MEET 28-9 FEB F.C. Feet 0.0 5.3 40.7 0.0 0.0 0.0 10.3 29.0 Kaf 0.0 596.4 989.9 0.0 0.0 0.0 113.4 344.6 Ksfd 0.0 300.7 499.1 0.0 0.0 0.0 57.2 173.7 Cfs over inflow 0 10738 17823 0 0 0 2043 6205 FORECASTS, KAF Apr-Jul mp na na na na na na 5920 3212 Apr-Jul % na na na na na na 102% 119% Apr-Jul change na na na na na na 190 -257 Apr-Aug mp 11927 25194 6915 2152 na 68800 na na Apr-Aug % 104% 108% 108% 105% na 113% na na Apr-Aug change 216 964 282 145 na 2600 na na May-Sep mp na na na na 2118 na na na May-Sep % na na na na 111% na na na May-Sep change na na na na 60 na na na FLOOD CONTROL LRC,/a. Drafts, KAF Feb 28-9 1440 3700 4125 1270 706 288 400 1568 1499 Mar 15 na na 4407 na na na na na na Mar 31 2080 5100 4407 1270 1077 3039 500 2016 1580 Apr 15 2080 5100 na 1270 1256 3964 550 2016 1516 Apr 30 2080 5100 na 1270 1436 4602 600 na na Elevations MSL Feb 28-9 na 1413.2 2333.8 1807.7 3528.2 1286.5 2044.5 1491.5 1497.8 Mar 15 na na 2320.1 na na na na na na Mar 31 na 1399.9 2320.1 1807.7 3509.2 1247.7 2034.6 1445.0 1490.4 Apr 15 na 1399.9 na 1807.7 3499.3 1232.2 2029.4 1445.0 1496.2 Apr 30 na 1399.9 na 1807.7 3488.7 1220.2 2024.1 na na FLOOD CONTROL Drafts, KAF shifted urc's, /b. Feb 28-9 na na na na na 757 0 1499 Mar 31 na na na na na 3975 0 1580 Apr 15 na na na na na 4602 412 1516 Elevations MSL Feb 28-9 na na na na na 1280.5 2077.0 1497.8 Mar 31 na na na na na 1232.0 2077.0 1490.4 Apr 15 na na na na na 1220.2 2043.4 1496.2 SHIFT POTENTIAL,KA 1/ 2/ 3/ 4/ 1/ DWR SYS F.C. MINUS LOC F.C. ie POTENTIAL STORAGE SHIFT TO GCL. Feb 28-9 69 357 757 2744 2/ GCL F.C. PLUS 1/. Mar 31 436 3475 3975 4602 3/ BRN F.C. PLUS 2/. Apr 15 500 4464 5014 4602 4/ MAXIMUM TOTAL THAT 2/ or 3/ Apr 30 NO SHIFT ALLOWED BY 30 APRIL CAN ADD UP TO. ============================================================================================ AT THE DALLES Peak to volume unreg, Apr-Aug mp 105000 112.6% storage 660 KCFS. Apr-Aug change 3000 correction Initial controlled flow- May-Aug mp 89971 28213 KAF (ICF) 398 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