Pool quality recognition guide 



Pool 



Quolity 

 class no. 



Length or 

 Width 



Depth 



Shelter 



1 



Greater than a.c.w.- 

 Greater than a.c.w. 



2' or deeper 

 3' or deeper 



Abundant 



Exposed' 



o 



Greater than a.c.w. 

 Greater than a.c.w. 

 Greater than a.c.w. 



2' or deeper 

 <2' 

 <2' 



Exposed 



Intermediate 



Abundant 



■i 



Equal to a.c.w. 

 Equal to a.c.w. 



<2' 

 <2' 



Intermediate 

 Abundant 



4 



Equal to a.c.w. 

 Less than a.c.w. 

 Less than a.c.w. 

 Less than a.c.w. 

 Less than a.c.w. 



Shallow' 

 Shallow 

 Shallow 

 <2' 



2' or deeper 



Exposed 



Abundant 



Intermediate 



Intermediate 



Abundant 



n 



Less than a.c.w. 



Shallow 



Exposed 



Logs, slumps, huulders, and t f fetation in or oi prhanpins pool, 



or oi erhanging hanks. 

 - Average < hanne! iridth. 



More than ' < penmrter oj pool has rover. 

 ' Less than '4 of pool perimeter has cover 



'■I '2 perimeter oj pool has rover 

 ■■ . \ pprori mntelv rriiinl to nvrrngr slri'om ilrplh 



worker waded along; the transect. Therefore, 

 it was impractical to detect any bottom type 

 less than 1 foot Ions. The combined lineal 

 footage of each type of bottom material was 

 measured and recorded to the nearest foot for 

 each channel. Width of the stream bottom 

 was considered equal to the width of the 

 stream surface. 



BANK STABILITY 



Bank conditions at each end of a transect 

 were rated either as "'stable" or as "unstable." 

 (1) An "unstable" ratmg was given if there 

 was any evidence of soil sloughing within the 

 past year. (2) The number of stable banks 

 for each transect was recorded as 0, 1, or 2. 

 (3) On multiple channels, only the two outer- 

 most banks were rated. 



STREAMSIDE VEGETATION 



Three types of streamside vegetation were 

 recognized: "forest," "brush," and "open." 

 Forest was defined as stands of trees. Other 

 woody vegetation was defined as "brush," and 

 banks without woody types of vegetation were 

 rated as "open." Recognition of these three 

 vegetation types was largeK based on sub- 



jective judgment; no specific measurements 

 were made. The field crews estimated which 

 type predominated over an area approximately 

 two hundred ieet square at each end of the 

 transect abo\e the high-water mark. In mak- 

 ing their judizment, the field crews used aerial 

 photos along with visual estimation of ground 

 cover. 



CHANNEL GRADIENT 



Two gradient readings were taken using 

 a hand level: one reading one hundred feet 

 upstream from the sample point and the other 

 one hundred feet downstream. The average of 

 these two readings (ignoring the minus sign 

 of the downstream reading) was recorded as 

 the gradient of the sample point. 



STREAM LENGTH 



On the aerial photos, the field crew identi- 

 fied and marked either ( 1 ) the origin of the 

 stream (at a lake or spring) or (2) the point 

 at which the average stream width became 

 less than 4 feet — whichever was encountered 

 first while working upstream. This point 

 often was downstream of the stream's begin- 

 ning point — originally marked as a correction 



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