7922

• UCREFRP Catalog Number: 7922
• Author: Bovee, K. D.
• Title: A Guide To Stream Habitat Analysis Using The Instream Flow Incremental Methodology, Instream Flow Information Paper No. 12.
• USFW Year: 1982.
• USFW - Doc Type: \
• Copyright Material: NO

FIGURES
Number Page
1 Overview of the analytical sequence performed in an
application of the IFIM ........................................ 5
2 Step 1 (Figure 1): Determine watershed influences on macro-
habitat characteristics with and without project ............... 7
3 Step 2 (top): Determine flow regime with and without project;
and Step 3 (bottom): Determine channel structure with and
without project ................................................ 10
4 Determination of length of stream having suitable water
quality and temperature (Step 4), determination of physical
microhabitat availability (Step 5), and integration to
determine total habitat available as a function of discharge
with and without project (Step 6) .............................. 13
5
6
7
8
9
10
11
12
13
14
15
Determination of habitat availablity over time (Step 7)
and description of impact as change in available or
utilized habitat ...............................................
Sample species periodicity chart for smallmouth bass...........
Strategies for designating river segments and selecting
study sites to represent each segment ..........................
Smooth longitudinal profile typical of streams flowing
from headwaters to lowlands with no intervening geological
abnormalities ..................................................
Irregular longitudinal profile of a stream flowing through
a canyon midway between source and mouth .......................
Temperature profiles for a range of August discharges from
20 to 65 cfs ...................................................
Example of a temperature preference curve ......................
Map of a segmented stream network showing locations of
three represented segment lengths in segment IV ................
Example of a temperature profile overlaid on a segment
having multiple study sites (from Figure 12) ...................
Weighted usable area for brown trout vs. discharge for
three study reaches in segment IV of example ...................
Total adult brown trout habitat in segment IV as a function
of discharge under summer (solid line) and nonsummer condi-
tions (dashed line) ............................................
17
35
39
43
43
77
77
79
82
83
87
xiii