U. S. Army Corps of Engineers, Jacksonville District Lake Okeechobee and Vicinity Report Data Ending 2400 hours 19 APR 2009 _____________________________________________________________________________ Okeechobee Lake Regulation Elevation Last Year 2YRS Ago (ft-NGVD) (ft-NGVD) (ft-NGVD) *Okeechobee Lake Elevation 11.56 10.44 9.96 (Official Elv) Bottom of High Lake Mngmt= 16.88 Top of Water Short Mngmt= 11.23 Currently in Operational Management Band 19APR (1965-2007) Period of Record Average 13.89 Difference from POR Average -2.33 Simulated Average LORS2008 [1965-2000] 12.66 Difference from Average LORS2008 -1.10 Today Lake Okechobee elevation is determined from the 4 interior stations ++Navigation Depths (Based on 2001 Channel Condition Survey) Route 1 ÷ 5.50' Route 2 ÷ 2.90' Bridge Clearance = 52.08' ______________________________________________________________________________ 4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 S4 S352 S308 S133 11.48 11.61 11.49 11.65 11.60 11.70 11.51 11.62 *Combination Okeechobee Avg-Daily Lake Average = 11.58 (*See Note) Interior Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 11.48 11.61 11.49 11.65 *Interior Okeechobee Avg-Daily Lake Average = 11.56 (*See Note) Okeechobee Lake Average (Avg-Daily values): (BAD) (BAD) C5 S4 S3 S2 S352 S308 S135 S133 S127 S129 11.69 11.60 11.61 11.51 11.70 11.51 11.46 11.62 11.49 11.09 *Edge Okeechobee Avg-Daily Lake Average = 11.53 (*See Note) ______________________________________________________________________________ Okeechobee Inflows (cfs): S65E 64 S191 0 Fisheating Cr -NR- S154 -NR- S133 Pumps 0 S135 Pumps 0 S84 0 S127 Pumps 0 S2 Pumps 0 S71 209 S129 Pumps -NR- S3 Pumps 0 S72 0 S131 Pumps 0 S4 Pumps 0 Total Inflows: 273 Okeechobee Outflows (cfs): S135 Culverts 0 S354 247 S77 325 S127 Culverts 0 S351 609 S308 243 S129 Culverts 0 S352 149 S131 Culverts L8 Canal Pt -19 C5 -NR- Total Outflows: 1554 Okeechobee Pan Evaporation (inches): S77 0.28 S308 0.31 Average Pan Evap x 0.75 Pan Coefficient = 0.22" = 0.02' Lake Average Precipitation using NEXRAD: = -NR-" = -NR-' Evaporation - Precipitation: = -NR-" = -NR-' Evaporation - Precipitation using Lake Area of 730 square miles is equal to -NR- Lake Okeechobee (Change in Storage) Flow is -5445 cfs or -10800 AC-FT ______________________________________________________________________________ ______________________________________________________________________________ Note: Headwater, tailwater, and stage values below are instantaneous values unless otherwise specified. Headwater Tailwater ----------- Gate Positions ------------ Elevation Elevation Disch #1 #2 #3 #4 #5 #6 #7 #8 (ft-msl) (ft-msl) (cfs) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (I) see note at bottom North East Shore S133 Pumps: 12.27 11.86 0 0 0 0 0 0 (cfs) S193: ______ S191: 17.87 11.79 0 0.0 0.0 0.0 S135 Pumps: 11.07 11.56 0 0 0 0 0 (cfs) S135 Culverts: 0 0.0 0.0 North West Shore S65E: 20.66 11.77 64 0.0 0.0 0.1 0.0 0.0 0.0 S127 Pumps: 11.89 11.49 0 0 0 0 0 0 (cfs) S127 Culvert: 0 0.0 S129 Pumps: 11.65 11.05 -NR- 0 -NR- 0 (cfs) S129 Culvert: 0 0.0 S131 Pumps: 11.82 11.88 0 0 0 (cfs) S131 Culvert: Fisheating Creek nr Palmdale ______ -NR- nr Lakeport ______ C5: ______ 11.69 -NR- -NR- -NR- -NR- South Shore S4 Pumps: 11.02 11.43 0 0 0 0 (cfs) S169: 11.46 11.25 111 2.0 2.0 1.5 S310: ______ -NR- S3 Pumps: 11.09 11.48 0 0 0 0 (cfs) S354: 11.48 11.09 247 1.5 1.5 S2 Pumps: 11.07 11.42 0 0 0 0 0 (cfs) S351: 11.42 11.07 609 2.9 2.4 2.8 S352: 11.71 11.19 149 0.6 0.9 C10A: -NR- 11.41 -NR- -NR- 7.0 -NR- -NR- L8 Canal PT 11.43 -19 _________________________________________________________________________ Temporary Pumps S351: 11.07 11.42 609 -NR--NR--NR--NR--NR--NR- S352: 11.19 11.71 149 -NR--NR--NR--NR- S354: 11.09 11.48 247 -NR--NR--NR--NR- _________________________________________________________________________ Caloosahatchee River (S77, S78, S79) S47B: 11.29 11.06 0.0 0.0 S47D: 11.06 11.06 -39 2.0 S77: Spillway and Sector Flow: 11.45 11.22 324 1.0 1.0 1.5 1.0 Flow Due to Lockages+: 1 S77 Below USGS Flow Gage 472 (TESTING) S78: Spillway and Sector Flow: 11.16 3.04 0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 20 S79: Spillway and Sector Flow: 2.90 1.59 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 17 Percent of flow from S77 -NR-% Chloride (ppm) 119 St. Lucie Canal (S308, S80) S308: Spillway and Sector Flow: 11.46 11.42 243 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 0 S308 Below USGS Flow Gage 170 S153: 18.58 11.30 0 0.0 0.0 S80: Spillway and Sector Flow: 11.39 0.21 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 26 Percent of flow from S308 -NR-% Steele Point Top Salinity (mg/ml) 20 Steele Point Bottom Salinity (mg/ml) 24 Speedy Point Top Salinity (mg/ml) 22 Speedy Point Bottom Salinity (mg/ml) 28 + Flow Due to lockages is computed utilizing average daily headwater and tailwater along with total number of lockages for the day to calculate a volume which is then converted to an average discharge in cfs. ______________________________________________________________________________ ----- Wind ---- Daily Precipitation Totals 1-Day 3-Day 7-Day Direction Speed (inches) (inches) (inches) (Degų) (mph) S133 Pump Station: 0.00 0.00 0.33 S193: -NR- 0.00 0.00 -NR- -NR- Okeechobee Field Station: 0.00 0.00 0.36 S135 Pump Station: 0.00 0.00 0.04 S127 Pump Station: 0.00 0.00 0.08 S129 Pump Station: 0.00 0.00 0.11 S131 Pump Station: 0.00 0.00 0.11 S77: 0.00 0.00 0.00 360 4 S78: 0.00 0.00 1.26 31 3 S79: 0.00 0.00 0.27 201 0 S4 Pump Station: -NR- 0.00 0.00 Clewiston Field Station: 0.00 0.00 0.02 S3 Pump Station: 0.00 0.00 1.29 S2 Pump Station: 0.00 0.00 0.43 S308: 0.00 0.00 1.70 104 9 S80: 0.00 0.00 0.50 39 0 Okeechobee Average 0.00 0.00 0.34 (Sites S78, S79 and S80 not included) ______________________________________________________________________________ Okeechobee Lake Elevations 19 APR 2009 11.56 Difference from 19APR09 19APR09 -1 Day = 18 APR 2009 11.59 0.03 19APR09 -2 Days = 17 APR 2009 11.62 0.06 19APR09 -3 Days = 16 APR 2009 11.66 0.10 19APR09 -4 Days = 15 APR 2009 11.69 0.13 19APR09 -5 Days = 14 APR 2009 11.69 0.13 19APR09 -6 Days = 13 APR 2009 11.80 0.24 19APR09 -7 Days = 12 APR 2009 11.81 0.25 19APR09 -30 Days = 20 MAR 2009 12.37 0.81 19APR09 -1 Year = 19 APR 2008 10.44 -1.12 19APR09 -2 Year = 19 APR 2007 9.96 -1.60 ______________________________________________________________________________ Long Term Mean 30day Avearge ET for Lake Alfred (Inches) = -NR- ______________________________________________________________________________ Lake Okeechobee Net Inflow (LONIN) Average Flow over the previous 14 days | Avg-Daily Flow 19APR09 Today = 19 APR 2009 -1731 MON | -3873 19APR09 -1 Day = 18 APR 2009 -1464 SUN | -3227 19APR09 -2 Days = 17 APR 2009 -1212 SAT | -3945 19APR09 -3 Days = 16 APR 2009 -756 FRI | -1976 19APR09 -4 Days = 15 APR 2009 -493 THU | -NR- 19APR09 -5 Days = 14 APR 2009 -493 WED | -NR- 19APR09 -6 Days = 13 APR 2009 -493 TUE | 2145 19APR09 -7 Days = 12 APR 2009 -1021 MON | -317 19APR09 -8 Days = 11 APR 2009 -1197 SUN | -3953 19APR09 -9 Days = 10 APR 2009 -278 SAT | -2067 19APR09 -10 Days = 09 APR 2009 616 FRI | -NR- 19APR09 -11 Days = 08 APR 2009 616 THU | 1630 19APR09 -12 Days = 07 APR 2009 -NR- WED | -NR- 19APR09 -13 Days = 06 APR 2009 -NR- TUE | -NR- ______________________________________________________________________________ ______________________________________________________________________________ S65E Average Flow over previous 14 days | Avg-Daily Flow 19APR09 Today= 19 APR 2009 175 MON | 64 19APR09 -1 Day = 18 APR 2009 182 SUN | 230 19APR09 -2 Days = 17 APR 2009 179 SAT | 251 19APR09 -3 Days = 16 APR 2009 176 FRI | 234 19APR09 -4 Days = 15 APR 2009 169 THU | 66 19APR09 -5 Days = 14 APR 2009 215 WED | 206 19APR09 -6 Days = 13 APR 2009 215 TUE | 122 19APR09 -7 Days = 12 APR 2009 263 MON | 226 19APR09 -8 Days = 11 APR 2009 299 SUN | 232 19APR09 -9 Days = 10 APR 2009 292 SAT | 34 19APR09 -10 Days = 09 APR 2009 294 FRI | 188 19APR09 -11 Days = 08 APR 2009 290 THU | 228 19APR09 -12 Days = 07 APR 2009 287 WED | 95 19APR09 -13 Days = 06 APR 2009 286 TUE | 268 ______________________________________________________________________________ Lake Okeechobee Outlets Last 14 Days S-77 S-77 S-78 S-78 Below S308 S-308 Discharge Discharge Discharge Discharge Discharge Discharge (0700-2100) (ALL DAY) (0700-2100) (ALL DAY) (ALL DAY) (ALL DAY) DATE (AC-FT) (AC-FT) (AC-FT) (AC-FT) (AC-FT) (AC-FT) 19 APR 2009 372 644 0 40 337 482 18 APR 2009 551 931 0 45 266 393 17 APR 2009 778 1593 10 312 492 659 16 APR 2009 1327 2042 549 873 551 60 15 APR 2009 972 1525 376 829 -75 -NR- 14 APR 2009 1556 2492 733 1741 1409 -NR- 13 APR 2009 2116 3579 1822 3102 1172 640 12 APR 2009 1994 3033 1800 2494 361 252 11 APR 2009 902 1420 636 861 590 374 10 APR 2009 588 1114 74 -NR- 729 371 09 APR 2009 618 1216 122 295 556 -NR- 08 APR 2009 747 1422 71 138 504 407 07 APR 2009 396 763 0 30 921832 -NR- 06 APR 2009 26 94 0 36 -NR- 371 S-79 S-310 S-351 S-352 S-354 L8 Canal Pt Discharge Discharge Discharge Discharge Discharge Discharge (ALL DAY) (ALL DAY) (ALL DAY) (ALL DAY) (ALL DAY) (ALL DAY) DATE (AC-FT) (AC-FT) (AC-FT) (AC-FT) (AC-FT) (AC-FT) 19 APR 2009 33 -NR- 1208 295 490 -37 18 APR 2009 36 -NR- 1485 496 896 -55 17 APR 2009 311 -NR- 1840 660 1424 -62 16 APR 2009 1106 -NR- 1995 894 1592 -116 15 APR 2009 1179 -NR- 1459 1051 789 -51 14 APR 2009 1976 -NR- 1503 1329 1388 165 13 APR 2009 3573 -NR- 1650 912 976 -9 12 APR 2009 3399 -NR- 1479 371 1097 141 11 APR 2009 1129 -NR- 1745 726 1697 201 10 APR 2009 20 -NR- 1916 1204 1793 8 09 APR 2009 21 -NR- 1973 1235 1592 -12 08 APR 2009 11 -NR- 2017 1063 1826 99 07 APR 2009 11 -NR- 2031 1103 2508 -34003 06 APR 2009 12 -NR- 1479 853 1604 -NR- *** NOTE: 1) Discharge from (0700-2100) is computed using Spillway and Sector Gate Discharges from 0700 hrs to 2100 hrs. 2) Discharge (ALL DAY) is computed using Spillway, Sector Gate and Lockages Discharges from 0015 hrs to 2400 hrs. ______________________________________________________________________________ (I) - Flows preceeded by "I" signify an instantaneous flow computed from the single value reported for the day ______________________________________________________________________________ * As of 11 May 1999, Lake Okeechobee Elevation was switched from Instantaneous 2400 value to an average-daily lake average. On 14 Mar 2001, due to the isolation of various gages within the standard 10 stations, we began using the average of the interior 4 station gages as the official Lake Okeechobee Elevation. * On 16 April 2007, Lake Okeechobee Elevation was switched to a 8 gage mixture of interior and exterior gages due to wind effects on Lake O (When the 4 station gages are not working the 10 station elevation is used) Today Lake Okechobee elevation is determined from the 4 interior stations ++ For more information see the Jacksonville District Navigation website at http://www.saj.usace.army.mil/hydroSurvey/hydro.htm $ For information regarding Lake Okeechobee Service Area water restrictions please refer to www.sfwmd.gov ______________________________________________________________________________ Report Generated 20APR2009 @ 14:15 ** Preliminary Data - Subject to Revision **