My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
7911
CWCB
>
UCREFRP
>
Copyright
>
7911
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
7/14/2009 5:01:46 PM
Creation date
5/20/2009 11:04:46 AM
Metadata
Fields
Template:
UCREFRP
UCREFRP Catalog Number
7911
Author
Platts, W. S.
Title
Validity Of Methodologies To Document Stream Environments For Evaluating Fishery Conditions, (from syposium and species conference on instream flow needs, West. Div. Am. Fisheries Soc., and Am. Soc. Civil Eng., Boise, ID, May 3-6, 1976)
USFW Year
1976
USFW - Doc Type
Proc. Symp. and Spec. Conf. on Instream Flow Needs
Copyright Material
YES
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
18
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
Show annotations
View images
View plain text
274 <br />Table 3. Pool Quality Rating Guide for Streams in the Study Area <br />Quality <br />Class No. Length or Width Depth Shelterl <br />1 greater than a.c.w.2 2 ft or deeper abundant3 <br />greater than a.c.w. 3 ft or deeper exposed4 <br />2 greater than a.c.w. 2 ft or deeper exposed <br />greater than a.c.w. 2 ft intermediates <br />greater than a.c.w. 2 ft abundant <br />3 equal to a.c.w. 2 ft intermediate <br />equal to a.c.w. 2 ft abundant <br />4 equal to a.c.w. shallow6 exposed <br />less than a.c.w. shallow abundant <br />less than a.c.w. shallow intermediate <br />less than a.c.w. 2 ft intermediate <br />less than a.c.w. 2 ft or deeper abundant <br />5 less than a.c.w. shallow exposed <br />'Logs, stumps, boulders, and vege tation in or overhanging pool, or <br />overhanging banks. <br />2a.c.w. = average channel width. <br />3More than 1/2 perimeter of pool has cover. <br />4Less than 1/4 of pool perimeter has cover. <br />51/4 to 112 perimeter of pool has cover. <br />6Approximately equal to average s tream depth. <br />Table 4. Numerical Ratings Used to Classify Streambank Environments <br />Coverl Condition2 Type3 (Examples) <br />forest 2.0 excellent 2.0 sod, root, log 2.0 <br />brush 1.5 good 1.5 brush, rubble 1.5 <br />grass 1.0 fair 1.0 grass, gravel 1.0 <br />exposed .5 poor .5 fines, road fill .5 <br />'Type of vegetation dominating the streambanks. <br />2Stability of the st reambank to water flows. <br />3A habitat type that can be composed of a single material or combination <br />of materials. <br />Width and Depth <br />Stream width values refer to surface water widths measured perpendicular <br />to the flow of the stream. Average transect depths were obtained from four <br />equal-distance measurements.
The URL can be used to link to this page
Your browser does not support the video tag.