River Velocities at Tarbert Discharge Range
Related to Red River Landing Gage
Gage Height(ft) ____________ MEAN__________ __________MAXIMUM__________
NGVD At 60% Depth Surface At 60% Depth Surface
(76 Adj) ft/sec mi/hr ft/sec mi/hr ft/sec mi/hr ft/sec mi/hr
5 2.3 1.6 2.6 1.8 2.8 1.9 3.1 2.1
10 2.6 1.7 2.9 2.0 3.0 2.0 3.4 2.3
15 2.8 1.9 3.2 2.2 3.2 2.2 3.7 2.5
20 3.2 2.1 3.6 2.4 3.6 2.4 4.1 2.8
25 3.4 2.4 3.9 2.6 4.0 2.7 4.5 3.1
30 3.8 2.6 4.2 2.9 4.5 3.1 5.1 3.5
35 4.0 2.7 4.5 3.1 5.2 3.5 5.9 4.0
40 4.4 3.0 5.0 3.4 6.0 4.1 6.8 4.6
45 4.8 3.2 5.4 3.7 6.9 4.7 7.8 5.3
50 5.3 3.6 6.0 4.1 8.0 5.4 9.0 6.2
55 5.9 4.0 6.7 4.5 9.2 6.2 10.3 7.0
60 6.8 4.6 7.6 5.2 10.5 7.2 11.9 8.1
Miles/hr = 0.682 x ft/sec
Knots = 0.592 x ft/sec
Miles/hr = 1.152 x knots
Knots = 0.868 x miles/hr
Velocity data presented as: Bar graph or Line graph
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