U. S. Army Corps of Engineers, Jacksonville District Lake Okeechobee and Vicinity Report Data Ending 2400 hours 04 AUG 2008 _____________________________________________________________________________ Okeechobee Lake Regulation Elevation Last Year 2YRS Ago (ft-NGVD) (ft-NGVD) (ft-NGVD) *Okeechobee Lake Elevation 11.02 9.45 12.19 (Official Elv) Bottom of High Lake Mngmt= 16.30 Top of Water Short Mngmt= 11.82 Currently in Water Shortage Management Band 04AUG (1965-2006) Period of Record Average 13.93 Difference from POR Average -2.91 Simulated Average LORS2008 [1965-2000] 12.76 Difference from Average LORS2008 -1.74 Today Lake Okechobee elevation is determined from the 4 interior stations ++Navigation Depths (Based on 2001 Channel Condition Survey) Route 1 ÷ 4.96' Route 2 ÷ 2.36' Bridge Clearance = 51.38' ______________________________________________________________________________ 4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values): (BAD) (BAD) L001 L005 L006 LZ40 S4 S352 S308 S133 10.92 11.03 10.05 11.12 11.08 11.17 10.93 11.12 *Combination Okeechobee Avg-Daily Lake Average = 11.05 (*See Note) Interior Okeechobee Lake Average (Avg-Daily values): (BAD) L001 L005 L006 LZ40 10.92 11.03 10.05 11.12 *Interior Okeechobee Avg-Daily Lake Average = 11.02 (*See Note) Okeechobee Lake Average (Avg-Daily values): (BAD) (BAD) (BAD) (BAD) (BAD) C5 S4 S3 S2 S352 S308 S135 S133 S127 S129 10.86 11.08 11.08 11.00 11.17 10.93 10.92 11.12 11.88 12.09 *Edge Okeechobee Avg-Daily Lake Average = 11.21 (*See Note) ______________________________________________________________________________ Okeechobee Inflows (cfs): S65E 2432 S191 68 Fisheating Cr -NR- S154 5 S133 Pumps -NR- S135 Pumps 0 S84 52 S127 Pumps -NR- S2 Pumps 0 S71 1591 S129 Pumps 0 S3 Pumps 0 S72 194 S131 Pumps 0 S4 Pumps 0 Total Inflows: 4342 Okeechobee Outflows (cfs): S135 Culverts -NR- S354 -NR- S77 -NR- S127 Culverts -NR- S351 -NR- S308 (BAD) -657 S129 Culverts 0 S352 -NR- S131 Culverts L8 Canal Pt -617 C5 -NR- Total Outflows: No Report Due To Missing S77 or S308 Discharge Data Okeechobee Pan Evaporation (inches): S77 0.26 S308 0.15 Average Pan Evap x 0.75 Pan Coefficient = 0.15" = 0.01' Lake Average Precipitation using NEXRAD: = 0.58" = 0.05' Evaporation - Precipitation: = -0.43" = -0.04' Evaporation - Precipitation using Lake Area of 730 square miles is equal to 8367 cfs into the lake. Lake Okeechobee (Change in Storage) Flow is 6958 cfs or 13800 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: 13.07 11.22 -NR- 0 0 0 0 -NR- (cfs) S193: ______ S191: 18.57 11.08 68 0.0 0.0 0.0 S135 Pumps: 11.72 11.02 0 0 0 0 0 (cfs) S135 Culverts: -NR- 0.0 -NR- North West Shore S65E: 21.02 10.77 2432 0.8 0.8 0.8 0.6 0.7 0.8 S127 Pumps: 13.74 11.63 -NR- -NR- 0 0 0 -NR- (cfs) S127 Culvert: -NR- -NR- S129 Pumps: 12.46 12.08 0 0 0 0 (cfs) S129 Culvert: 0 0.0 S131 Pumps: 13.53 13.52 0 0 0 (cfs) S131 Culvert: Fisheating Creek nr Palmdale ______ -NR- nr Lakeport ______ C5: ______ 10.86 -NR- -NR- -NR- -NR- South Shore S4 Pumps: 11.18 11.06 0 0 0 0 (cfs) S169: 11.10 11.33 0 0.0 0.0 0.0 S310: ______ -NR- S3 Pumps: ______ -NR- 0 0 0 0 (cfs) S354: -NR- ______ -NR- -NR- -NR- S2 Pumps: 11.91 11.02 0 0 0 0 0 (cfs) S351: 11.02 11.91 -NR- -NR- -NR- -NR- S352: ______ -NR- -NR- -NR- -NR- C10A: -NR- 11.72 -NR- -NR- 8.0 -NR- -NR- L8 Canal PT 11.85 -617 _________________________________________________________________________ Temporary Pumps S351: 11.91 11.02 -NR- -NR--NR--NR--NR--NR--NR- S352: -NR- ______ -NR- -NR--NR--NR--NR- S354: ______ -NR- -NR- -NR--NR--NR--NR- _________________________________________________________________________ Caloosahatchee River (S77, S78, S79) S47B: 11.10 11.84 0.0 0.0 S47D: 11.85 11.08 0 0.0 S77: Spillway and Sector Flow: 10.98 10.58 -NR- 5.0 5.0 5.0 5.0 Flow Due to Lockages+: -NR- S77 Below USGS Flow Gage -67 (TESTING) S78: Spillway and Sector Flow: 11.13 2.99 0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 0 S79: Spillway and Sector Flow: 3.04 1.09 1277 0.5 0.5 1.0 1.0 1.0 1.0 0.5 0.5 Flow Due to Lockages+: 1 Percent of flow from S77 -NR-% Chloride (ppm) 60 St. Lucie Canal (S308, S80) S308: Spillway and Sector Flow: 11.03 12.12 -657 0.0 2.5 0.0 0.0 Flow Due to Lockages+: 0 S308 Below USGS Flow Gage -1771 S153: 19.05 12.05 -NR- -NR- 0.0 S80: Spillway and Sector Flow: 12.43 0.79 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 0 Percent of flow from S308 -NR-% Steele Point Top Salinity (mg/ml) 30 Steele Point Bottom Salinity (mg/ml) 28 Speedy Point Top Salinity (mg/ml) 16 Speedy Point Bottom Salinity (mg/ml) 12 + 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: 0.86 0.87 1.84 S193: -NR- 0.00 0.00 -NR- -NR- Okeechobee Field Station: 0.99 1.00 1.37 S135 Pump Station: 0.14 0.80 0.91 S127 Pump Station: 0.87 0.91 1.02 S129 Pump Station: 0.11 0.11 0.90 S131 Pump Station: 0.40 0.44 0.50 S77: 12.95 13.46 14.84 349 0 S78: 1.16 1.16 1.75 6 0 S79: 0.19 0.34 1.07 114 3 S4 Pump Station: -NR- 0.00 0.00 Clewiston Field Station: 1.42 1.44 1.83 S3 Pump Station: 2.52 2.56 2.66 S2 Pump Station: 1.07 1.32 1.98 S308: 0.01 0.15 0.28 95 0 S80: 0.47 0.57 5.17 26 0 Okeechobee Average 1.94 1.77 2.16 (Sites S78, S79 and S80 not included) ______________________________________________________________________________ Okeechobee Lake Elevations 04 AUG 2008 11.02 Difference from 04AUG08 04AUG08 -1 Day = 03 AUG 2008 10.98 -0.04 04AUG08 -2 Days = 02 AUG 2008 10.91 -0.11 04AUG08 -3 Days = 01 AUG 2008 10.89 -0.13 04AUG08 -4 Days = 31 JUL 2008 10.86 -0.16 04AUG08 -5 Days = 30 JUL 2008 10.84 -0.18 04AUG08 -6 Days = 29 JUL 2008 10.76 -0.26 04AUG08 -7 Days = 28 JUL 2008 10.76 -0.26 04AUG08 -30 Days = 05 JUL 2008 9.96 -1.06 04AUG08 -1 Year = 04 AUG 2007 9.45 -1.57 04AUG08 -2 Year = 04 AUG 2006 12.19 1.17 ______________________________________________________________________________ Long Term Mean 30day Avearge ET for Lake Alfred (Inches) = 4.52 ______________________________________________________________________________ Lake Okeechobee Net Inflow (LONIN) Average Flow over the previous 14 days | Avg-Daily Flow 04AUG08 Today = 04 AUG 2008 -NR- TUE | -NR- 04AUG08 -1 Day = 03 AUG 2008 -NR- MON | -NR- 04AUG08 -2 Days = 02 AUG 2008 -NR- SUN | -NR- 04AUG08 -3 Days = 01 AUG 2008 -NR- SAT | -NR- 04AUG08 -4 Days = 31 JUL 2008 -NR- FRI | -NR- 04AUG08 -5 Days = 30 JUL 2008 -NR- THU | -NR- 04AUG08 -6 Days = 29 JUL 2008 -NR- WED | -NR- 04AUG08 -7 Days = 28 JUL 2008 -NR- TUE | -NR- 04AUG08 -8 Days = 27 JUL 2008 -NR- MON | -NR- 04AUG08 -9 Days = 26 JUL 2008 -NR- SUN | -NR- 04AUG08 -10 Days = 25 JUL 2008 -NR- SAT | -NR- 04AUG08 -11 Days = 24 JUL 2008 -NR- FRI | -NR- 04AUG08 -12 Days = 23 JUL 2008 -NR- THU | -NR- 04AUG08 -13 Days = 22 JUL 2008 -NR- WED | -NR- ______________________________________________________________________________ ______________________________________________________________________________ S65E Average Flow over previous 14 days | Avg-Daily Flow 04AUG08 Today= 04 AUG 2008 2557 TUE | 2432 04AUG08 -1 Day = 03 AUG 2008 2536 MON | 2452 04AUG08 -2 Days = 02 AUG 2008 2495 SUN | 2288 04AUG08 -3 Days = 01 AUG 2008 2475 SAT | 2914 04AUG08 -4 Days = 31 JUL 2008 2410 FRI | 2500 04AUG08 -5 Days = 30 JUL 2008 2310 THU | 2719 04AUG08 -6 Days = 29 JUL 2008 2140 WED | 2758 04AUG08 -7 Days = 28 JUL 2008 2019 TUE | 2688 04AUG08 -8 Days = 27 JUL 2008 1883 MON | 2666 04AUG08 -9 Days = 26 JUL 2008 1762 SUN | 2746 04AUG08 -10 Days = 25 JUL 2008 1588 SAT | 2573 04AUG08 -11 Days = 24 JUL 2008 1492 FRI | 2364 04AUG08 -12 Days = 23 JUL 2008 1406 THU | 2477 04AUG08 -13 Days = 22 JUL 2008 1316 WED | 2226 ______________________________________________________________________________ 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) 04 AUG 2008 -32957 -NR- 0 0 -3512 -1303 03 AUG 2008 -66610 ****** 0 11 ****** -3066 02 AUG 2008 -66601 -NR- 0 4 -NR- -783 01 AUG 2008 -NR- -NR- 0 7 -NR- -2429 31 JUL 2008 -NR- -NR- 0 7 -NR- -3349 30 JUL 2008 -NR- -NR- 0 0 -NR- -NR- 29 JUL 2008 -NR- -NR- 0 2 -NR- -NR- 28 JUL 2008 2296 3895 0 2 -NR- -NR- 27 JUL 2008 2478 -NR- 0 6 -NR- -NR- 26 JUL 2008 -NR- -NR- 0 2 -NR- -NR- 25 JUL 2008 -NR- -NR- 0 -NR- -NR- -NR- 24 JUL 2008 -NR- -NR- 0 -NR- -NR- -NR- 23 JUL 2008 -NR- -NR- 0 -NR- -NR- -1610 22 JUL 2008 -NR- -NR- 0 -NR- -NR- 0 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) 04 AUG 2008 2534 -NR- -NR- -NR- -NR- -1224 03 AUG 2008 1890 -NR- -NR- -NR- -NR- -1314 02 AUG 2008 1860 -NR- -NR- -NR- -NR- -1239 01 AUG 2008 2057 -NR- -NR- -NR- -NR- -1260 31 JUL 2008 3014 -NR- -NR- -NR- -NR- -1382 30 JUL 2008 2167 -NR- -NR- -NR- -NR- -1339 29 JUL 2008 3242 -NR- -NR- -NR- -NR- -1411 28 JUL 2008 3147 -NR- -NR- -NR- -NR- -1354 27 JUL 2008 3153 -NR- -NR- -NR- -NR- -1461 26 JUL 2008 1256 -NR- -NR- -NR- -NR- -1508 25 JUL 2008 3697 -NR- -NR- -NR- -NR- -1385 24 JUL 2008 1628 -NR- -NR- -NR- -NR- -1352 23 JUL 2008 3483 -NR- -NR- -NR- -NR- -1270 22 JUL 2008 2273 -NR- -NR- -NR- -NR- -1272 *** 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 05AUG2008 @ 16:15 ** Preliminary Data - Subject to Revision **