Tillingbourne Riverfly Monitoring

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

 

 

 

 

 

Earlier Results  < click for >   Later Results
 
River Tillingbourne Date: 15/04/2009 16/06/2009 20/07/2009
Albury Park Recorded by:  CRS  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 B 2 50 B 2 12 B 2 15
Caseless caddis B 2 80 B 2 50 B 2 12
Ephemeridae (Mayfly) B 2 50 A 1 6 B 2 30
Ephemerellidae (Blue Winged Olive) A 1 5 B 2 50 B 2 180
Heptageniidae (Yellow May Dun) C 3 400 B 2 10 A 1 5
Baetidae (Olives) C 3 250 A 1 8 B 2 85
Stoneflies - - - - - - - - -
Gammarus (Freshwater shrimp) D 4 1100 D 4 1500 D 4 1500
                       
Middle Beat (9) Angler's Monitoring Index:

 

 17  

 

14

     15  
TQ 06524 47771   Good numbers of large heptageniidae - should be hatching very soon. Just started to see BWOs. Pleasing numbers of cased caddis - mainly goeridae. A few damsel nymphs in sample. Heptageniidae numbers have now reduced considerably - quite a few this year seen as adults. Rather poor numbers of olives. A few more baetis than last month but fewer caseless caddis - mainly rhyacophila. Good numbers of BWO and the usual mass of gammarus.
    Notes: