WSP04021

• File Number: 8062
• Description: Federal Reserved Water Rights
• State: CO
• Basin: Statewide
• Date: 9/1/1979
• Author: R Barry Nehring
• Title: Evaluation of Instream Flow Methods and Determination of Water Quantity Needs for Streams in the State of Colorado - September 1979
• Water Supply Pro - Doc Type: Report/Study

OG~J133

7

Table 3-A.

Key flow parameters used to determine minimum flow
requirements for the multiple transect R-2 Cross and
IFG4 methods.

Stream Average Average Wetted
width depth velocity perimeter a
(ft) (ft) (ft/sec) (%)
Run Habitat Type
1 - 21 0.2 0.5 50
21 - 40 0.2 - 0.4 0.5 50
41 - 60 0.4 - 0.6 0.5 50-60
61 - 100 0.6 - 1.0 0.5 70 or greater
Pool Habitat Type
1 - 20 0.4 0.1 50
21 - 40 0.4 - 0.8 0.1 50
41 - 60 0.8 - 1.2 0.1 50-60
61 - 100 1.2- 2.0 0.1 70 or greater

~etted perimeter was not part of the computer printout with
the IFG4 and was not used in determining minimum flow recommen-
dations with this method.