Tillingbourne Riverfly Monitoring

Results Home Monitoring Sites Sampling Target Groups References

 

Monitoring Results
  Middle Beat
Upper Beat
Total Score (ASI)
Middle Beat Graph
Upper Beat Graph

 

 

 

 

 

Earlier Results  < click for >   Later Results
 
River Tillingbourne Date:  9/4/2007  15/8/2007  7/11/2007
Albury Park Recorded by:  CRS CRS  CRS
Upper Beat  

Category

(A-D)

AMI

Score

Estimated

Number

Category

(A-D)

AMI

Score

Estimated

Number

Category

(A-D)

AMI

Score

Estimated

Number
 
                       
Cased caddis A 1 5  A 1 1 A 1  2
Caseless caddis A 1 5  A 1 1 A 1  8
Ephemeridae (Mayfly) C 3 100+  B 2 35 A 1  4
Ephemerellidae (Blue Winged Olive) A 1 8  B 2 12 - -  -
Heptageniidae (Yellow May Dun) B 2 25 - - - B 2  70
Baetidae (Olives) B 2 50 A 1 3 B 2 12
Stoneflies - - - - - - - -  -
Gammarus (Freshwater shrimp) C 3 800  B 2 50 C 3  150
                       
Upper Beat (3) Angler's Monitoring Index:

13

 

 

9

 

 

10

 

 
TQ 06872 47682   As usual far more mayfly in upper than in middle. Also far less BWOs. Tiny crayfish (2) in sample. Fast flowing coloured water deeper than normal. Lots of silt. As normal for upper, devoid of weed and bankside vegetation. Large number (80) of cranefly larvae. Rather low numbers of shrimp compared to middle beat. A few cranefly larvae (10) found in sample.
    Notes: