Tillingbourne Riverfly Monitoring

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

 

 

 

 

 

Earlier Results  < click for >   Later Results
 
River Tillingbourne Date: 07/04/11    
Albury Park Recorded by:  CRS    
Middle Beat  

Category

(A-D)

AMI

Score

Estimated

Number

Category

(A-D)

AMI

Score

Estimated

Number

Category

(A-D)

AMI

Score

Estimated

Number
 
                       
Cased caddis C 3 120            
Caseless caddis C 3 150            
Ephemeridae (Mayfly) B 2 25            
Ephemerellidae (Blue Winged Olive) - - -            
Heptageniidae (Yellow May Dun) D 4 1200            
Baetidae (Olives) C 3 300            
Stoneflies - - -            
Gammarus (Freshwater shrimp) D 4 1600            
                       
Middle Beat (12) Angler's Monitoring Index:

 

 19              
TQ 06524 47771  

Enormous numbers in the Heptageniidae group - both Yellow Mays and Rhithrogena. Samples taken for identification - either Olive Upright or March Brown? Most likely Olive Upright. Majority of the mayfly nymphs are small  10.5°C

    
    Notes: