L&D21 6am Report MONDAY 19 MAY 2025
LockMaster: Jeffrey (Jeff) Gibbs Flat Pool = 12.2 Flat Tail = 1.7 River Mile = 324.9
Asst: Dallas Roberts DA = 135,000 mi^2 UNG LOC DA = ??? mi^2 %UNG LOC = ?%
Phone: (217) 222-0918 or (6222) Flood Stage = 17 Lock Closed = 21.4 Top of Lock = 25.7
10 Submrg Tainters (60') Gates #1-5, 9-13 LD20(2 hr) <- LD21 -> LD22(2 hr) Top of Spillway = 12.7
3 Submrg Rollers (100') Gates #6,7,8 Out of Operation = 11.0' = 133,000 cfs Swell Head = 0.7
Max Submrg Setting = -79.0 X -21.0 = 88,400 cfs Gage Zero = 457.80 TW cntrl > 7.0' GATE cntrl < 6.4'
6am Maximum Permissible Feet of Bulkhead = 40 Record Flood Stage = 31.30 in July 1993
M I 2 1 Q L D I 2
Float Gage Wind Temp
Pool Tail Tnt Rlr Flow T Q/f R Q/f Pool Tail Pool Tail Spd Dir Gst Air Water Prec UINI2
0000: 12.50 7.06 63.0 19.0 85.7 0.00 0.00 12.51 7.06 12.52 7.10 0 SE 0 58 70 0.00 11.93
0100: 12.44 7.03 63.0 19.0 85.4 0.00 0.00 12.44 7.02 12.44 7.05 1 NW 2 59 70 0.00 11.86
0200: 12.38 7.00 63.0 19.0 85.0 0.00 0.00 12.37 7.00 12.37 7.03 0 SW 1 56 70 0.00 11.80
0300: 12.32 6.97 63.0 19.0 84.8 0.00 0.00 12.33 6.98 12.33 7.01 4 NW 7 57 70 0.00 11.74
0400: 12.27 6.95 63.0 19.0 84.7 0.00 0.00 12.26 6.95 12.27 6.99 8 N 10 56 70 0.00 11.66
0500: 12.21 6.93 63.0 19.0 84.6 0.00 0.00 12.19 6.93 12.20 6.96 6 N 8 54 69 0.00 11.61
0600: 12.15 6.91 63.0 19.0 84.4 0.00 0.00 12.14 6.91 12.15 6.94 6 N 7 54 69 0.00 0.00 11.56
0700: 12.12 6.88 63.0 19.0 84.3 0.00 0.00 12.12 6.91 12.13 6.94 6 NW 8 52 69 0.00 11.56
0800: 12.08 6.84 63.0 19.0 84.2 0.00 0.00 12.02 6.87 12.02 6.90 5 N 7 54 69 0.00 11.56
0900: 12.01 6.83 63.0 19.0 84.0 0.00 0.00 11.98 6.75 11.99 6.77 7 N 9 55 69 0.00 11.56
1000: 11.94 6.81 63.0 19.0 83.9 0.00 0.00 11.95 6.82 11.95 6.85 8 N 9 57 69 0.00 11.28
1100: 11.96 6.67 63.0 19.0 81.1 0.00 0.00 11.89 6.80 11.89 6.84 3 N 7 61 69 0.00 11.30
1200: 11.99 6.54 55.0 17.0 78.3 0.00 0.00 12.03 6.52 12.04 6.56 2 N 4 63 69 0.00 0.00 11.39
1300: 12.04 6.43 55.0 17.0 79.2 0.53 0.65 12.04 6.42 12.05 6.44 2 NW 4 65 69 0.00 11.38
1400: 12.08 6.32 55.0 17.0 80.0 1.06 1.29 12.07 6.36 12.07 6.39 2 NW 3 69 69 0.00 11.44
1500: 12.09 6.32 55.0 17.0 80.1 1.06 1.29 12.08 6.35 12.09 6.39 1 NW 2 71 70 0.00 11.43
1600: 12.09 6.31 55.0 17.0 80.2 1.06 1.29 12.09 6.32 12.10 6.36 4 NE 8 75 70 0.00 11.45
1700: 12.10 6.35 55.0 17.0 80.0 1.06 1.29 12.10 6.31 12.10 6.34 4 E 6 77 70 0.00 11.46
1800: 12.11 6.39 55.0 17.0 79.8 1.05 1.28 12.15 6.31 12.15 6.35 4 NE 9 77 70 0.00 0.00 11.47
1900: 12.11 6.34 55.0 17.0 80.0 1.06 1.29 12.07 6.31 12.08 6.35 2 NE 3 75 70 0.00 11.43
2000: 12.10 6.30 55.0 17.0 80.3 1.06 1.29 12.10 6.30 12.11 6.33 4 E 7 73 70 0.00 11.49
2100: 12.10 6.29 55.0 17.0 80.4 1.06 1.29 12.09 6.28 12.10 6.32 6 E 10 70 70 0.00 11.47
2200: 12.09 6.28 55.0 17.0 80.4 1.06 1.29 12.09 6.28 12.10 6.31 7 E 9 69 70 0.00 11.48
2300: 12.08 6.28 55.0 17.0 80.3 1.06 1.29 12.08 6.30 12.09 6.33 1 SE 3 67 70 0.00 11.43
2400: 12.07 6.28 55.0 17.0 80.3 1.06 1.29 12.07 6.28 12.08 6.32 4 SE 6 66 70 0.00 0.00 11.45
0100: 12.04 6.31 55.0 17.0 79.9 1.05 1.29 12.05 6.27 12.06 6.31 3 SE 5 66 70 0.00 11.45
0200: 12.02 6.34 55.0 17.0 79.5 1.05 1.28 12.02 6.32 12.02 6.35 9 E 12 66 70 0.00 11.42
0300: 12.00 6.30 55.0 17.0 79.6 1.05 1.28 12.02 6.26 12.03 6.29 4 E 5 66 70 0.00 11.42
0400: 11.98 6.26 55.0 17.0 79.8 1.05 1.28 11.98 6.26 11.98 6.30 5 SE 9 66 70 0.00 11.39
0500: 11.97 6.25 55.0 17.0 79.8 1.05 1.28 11.94 6.25 11.95 6.28 7 SE 11 67 70 0.00 11.35
0600: 11.96 6.23 55.0 17.0 79.8 1.05 1.29 11.96 6.22 11.96 6.26 2 NE 4 66 70 0.00 0.00 11.34
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0.00
HG QR Chg Prec
MBRI2 2.56 10 -2 ______ Ystday Avg LD21 Q: 82.1 Chg: -3.4
CNZM7(18) 2.82 12 1 0.00 Ystday Avg LD20 Q: 82.9 Chg: -5.1
UNGAGED _____ _____ Ystday Avg Trib Q: 0.0 Chg: -0.0
_____ ____ Ystday Avg Stor Q: -0.0
Total 22 0
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SPREAD -0.8
OMNI -- 6hr Change = -0.11 24hr Equivl = -0.44 Storage/FT Change = 41 6HR DELTA Pool = -18
FLOAT-- 6hr Change = -0.11 24hr Equivl = -0.44 Storage/FT Change = 41 6HR DELTA Pool = -18
P.T. -- 6hr Change = -0.12 24hr Equivl = -0.48 Storage/FT Change = 41 6HR DELTA Pool = -19
OMNI -- 8hr Change = -0.13 24hr Equivl = -0.39 Storage/FT Change = 41 8HR DELTA Pool = -16
FLOAT-- 8hr Change = -0.13 24hr Equivl = -0.39 Storage/FT Change = 41 8HR DELTA Pool = -16
P.T. -- 8hr Change = -0.14 24hr Equivl = -0.42 Storage/FT Change = 41 8HR DELTA Pool = -17
OMNI -- 12hr Change = -0.15 24hr Equivl = -0.30 Storage/FT Change = 41 12HR DELTA Pool = -12
FLOAT-- 12hr Change = -0.19 24hr Equivl = -0.38 Storage/FT Change = 41 12HR DELTA Pool = -15
P.T. -- 12hr Change = -0.19 24hr Equivl = -0.38 Storage/FT Change = 41 12HR DELTA Pool = -15
Balanced Gates Jacob Charts Rating Table
10.0 x 3.0 (6.2) 76.0 --> 52 x 17 (11.0)132500
12.5 x 4.5 (6.4) 78.0 --> 54 x 17 (12.0)144200
17.0 x 6.0 (6.6) 81.0 --> 58 x 17 (13.0)157000
21.5 x 7.5 (6.8) 83.0 --> 59 x 18 (14.0)171000
24.5 x 8.5 (7.0) 85.0 --> 60 x 19 (15.0)184500
26.0 x 9.0 (7.2) 87.5 --> 64 x 20 (16.0)201000
30.0 x 10.0 (7.4) 90.0 --> 65 x 21 (17.0)217700
31.0 x 10.5 (7.6) 92.0 --> 66 x 22 (18.0)235400
34.5 x 11.5 (7.8) 94.2 --> 67 x 24 <-- Appendage (19.0)254000
36.5 x 12.0 (8.0) 96.4 --> 72 x 24 <-- 24-27 (20.0)272000
39.5 x 13.5 (8.2) 98.5 --> 76 x 24 <-- Significant (21.0)289000
45.5 x 15.0 (8.4) 100.7 --> 78 x 25 <-- change in (22.0)304000
50.0 x 16.5 (8.6) 102.7 --> 80 x 27 <-- flow will (23.0)318000
55.0 x 17.5 (8.8) 104.8 --> 83 x 27 <-- occur (24.0)337000
60.0 x 19.0 (9.0) 106.9 --> 86 x 27 <-- (25.0)358000
65.0 x 21.0 (9.2) 108.9 --> 86 x 30 (26.0)379000
68.0 x 22.0 (9.4) 111.0 --> 90 x 30 (27.0)400000
70.0 x 24.0 (9.6) 113.0 --> 94 x 30 (28.0)427000
78.0 x 25.0 (9.8) 115.0 --> 98 x 30 (29.0)458500
81.0 x 27.0 (10.0) 117.1 --> 100 x 33 (30.0)491000
88.0 x 30.0 (10.2) 119.1 --> 110 x 33 (31.0)529000
96.0 x 33.0 (10.4) 121.2 --> 120 x 36 (32.0)579900
105.0 x 35.0 (10.6) 123.2 --> 130 x 39 (33.0)672000
(10.8) 125.3 --> 140 x 42
(11.0) 127.5 --> 150 x 45