River Tillingbourne	Date:	01/09/10			03/11/10			03/03/11
Albury Park	Recorded by:	CRS			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
		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	90	B	2	60
Caseless caddis		B	2	30	B	2	40	B	2	60
Ephemeridae (Mayfly)		A	1	1	A	1	2	B	2	60
Ephemerellidae (Blue Winged Olive)		B	2	40	A	1	8	-	-
Heptageniidae (Yellow May Dun)		B	2	15	C	3	200	C	3	200
Baetidae (Olives)		C	3	150	C	3	150	C	3	120
Stoneflies		-	-	-	-	-	-	-	-
Gammarus (Freshwater shrimp)		D	4	1500	D	4	1100	D	4	1200

Middle Beat (12)	Angler's Monitoring Index:		16			16			16
TQ 06524 47771		Cased caddis mainly goeridae. Visually a little bit low on numbers but score still good. Numbers of BWOs now decreasing from the peak in May			Lots of caddis caseless (rhyacophilia and Hydropsyche) as well as cased (mainly goeridae). Just a few BWOs. Mostly Rhithrogena recorded under YMDs			Reasonable numbers of small mayfly nymphs - hardly any larger specimens. A few damsel nymphs. 5.6°C, PH 7.3
	Notes:

Tillingbourne Riverfly Monitoring