7316

• UCREFRP Catalog Number: 7316
• Author: U.S. Army Corps of Engineers.
• Title: Redlands Dam Fishway Feasibility Study, Gunnison River, Colorado.
• USFW Year: 1986.
• USFW - Doc Type: Walla Walla.
• Copyright Material: NO

TABLE 1
FISH LADDER HYDRAULIC CHARACTERISTICS
(Vertical Slot/Orifice Ladder)
23 Weirs 11 Weirs 45 Weirs
Low Flow Conditions
(same characteristics for
Alternates 1, lA, and 3)
Ladder Flow, cfs 17.9 25.2 15.0
Average Slot Velocity, fps 4.3 6.0 3.0-3.6
Average Orifice Velocity, fps 3.4 4.8 2.4-2.8
Head Drop per Pool, feet 0.50 1.00 0.25-0.35
High Flow Conditions
Alternate No. 1
Ladder Flow, cfs 19.8 28.2 16.2
Average Slot Velocity, fps 2.4-4.2 3.4-6.0 2.0-3.0
Average Orifice Velocity, fps 1.9-3.4 2.7-4.8 1.6-2.4
Head Drop per Pool, feet 0.16-0.49 0.33-0.98 0.11-0.24
Alternate No. lA
Ladder Flow, cfs 22.0 31.3 17.7
Average Slot Velocity, fps 2.7-4.2 3.8-6.0 3.0-6.2
Average Orifice Velocity, fps 2.1-3.4 3.1-4.8 2.4-5.0
Head Drop per Pool, feet 0.20-0.49 0.40-0.98 0.13-0.24
Alternate No. 3
Ladder Flow, cfs 17.6 25.0 14.8
Average Slot Velocity, fps 2.1-4.2 3.1-6.0 1.8-3.0
Average Orifice Velocity, fps 1.7-3.4 2.4-4.8 1.4-2.4
Head Drop per Pool, feet 0.13-0.49 0.26-0.98 0.09-0.24
~J
TABLE 1