Riverflies: This is a formal survey following specific criteria that allows a "score" derived. This is then a measure of the river's health, which can be used to monitor the river and compare with national standards. MCG volunteers conduct the survey a few times during the year and submit the results. For more information go to           http://riverflies.org/rp-riverfly-monitoring-initiative
Category                        Date	19/5/19	19/8/19	24/4/21	15/4/22	nr	19/9/25
Cased Caddis	0	0	0	0		2
Caseless Caddis	4	1	5	10		5
Mayfly Ephemeridae	0	0	0	0		0
Blue Winged Olive	0	0	0	0		0
Flat Bodied Heptageniidae	0	0	0	0		0
Olives Baetidae	150	150	100	100		30
Stoneflies	0	0	0	0		0
Freshwater Shrimp Gammarus	1	1	0	0		20
Also Seen                    Date	19/5/19	19/8/19	24/4/21	15/4/22	nr	19/9/25
Water Slater	200	200	150	150		20
Leech	150	150	100	50		30
Pea Cockle	200	200	200	200		200
River Snail	5	10	5	0		5
Great Pond Snail	5	10	0	0		0