📍 U4: Waterend Lane

River: Lea Catchment: Upper Lea (Hertfordshire) Filter(s): 102

Your Site at a Glance

260
Species Detected
174
Genera Identified
82
Families Found
1,042,286
DNA Sequences

How Your Site Compares

Metric Your Site Lea Average Study Average
Species 260 251 206
Genera 174 174 151
Families 82 87 83
EPT Families 4 6 6

Rank 7 of 10 on Lea Rank 23 of 81 in study

🌊 Water Quality Indicators

Moderate

BMWP score: 56 (Moderate) — ASPT score: 5.1 (Good)

11 scoring macroinvertebrate families detected

Water quality is moderately impacted; some pollution-sensitive families are present but diversity is limited.

🔍 Notable Findings

Conservation Species:

Invasive Species:

🦋 Top 10 Families at Your Site

1. Chironomidae (Non-biting Midges)
60 (23.1%)
2. Naididae (Aquatic Oligochaetes)
37 (14.2%)
3. Cyprinidae (Carp and Allies)
11 (4.2%)
4. Lumbricidae (Common Earthworms)
11 (4.2%)
5. Chydoridae (Chydorid Water Fleas)
8 (3.1%)
6. Simuliidae (Black Flies)
8 (3.1%)
7. Enchytraeidae (Potworms)
6 (2.3%)
8. Psychodidae (Moth Flies)
5 (1.9%)
9. Anatidae (Ducks, Geese, and Swans)
5 (1.9%)
10. Phasianidae (Pheasants and Partridges)
4 (1.5%)
Taxonomic composition

🪲 Extended Riverfly Taxa

1 Flatworms 18Dragonflies and Damselflies
2 Freshwater Snails 19Water Boatmen
3 Limpets 20Other Water Bugs
4 Bivalves 21Water Beetles
5 Aquatic Worms 22Alderflies
6 Leeches 23Caseless Caddisflies - Green Sedge
7 Crayfish 24Caseless Caddisflies - Net Spinners
8 Water Hoglouse 25Caseless Caddisflies - Non-Gilled
9 Freshwater Shrimps 26Cased Caddisflies - Hood Case-Maker
10 Invasive Non-Native Shrimps 27Cased Caddisflies - Weighted Case-Maker
11 Mayflies - Angler's Curse 28Cased Caddisflies - Bush Tailed Caddisfly
12 Mayflies - Olives 29Cased Caddisflies - Other
13 Mayflies - Prong Gilled 30Craneflies
14 Mayflies - Flatbodied 31Blackflies
15 Mayflies - Green Drake 32Non-Biting Midges
16 Mayflies - Blue-Winged Olive 33Water Snipe Flies
17 Stoneflies
15/33 Extended Riverfly taxa detected

Note: The Extended Riverfly Monitoring Initiative calculates scores based on abundance categories, which cannot be determined from eDNA presence/absence data. This checklist shows which taxa groups were detected but does not constitute an official ARMI score.

🐟 Fish Species

16 fish species detected (6 families, 187 ESVs)
SpeciesFamilyESVs
Phoxinus phoxinus (Minnow) Cyprinidae 15
Gobio gobio (Gudgeon) Cyprinidae 14
Squalius cephalus (Chub) Cyprinidae 12
Gasterosteus aculeatus (Three-spined Stickleback) Gasterosteidae 10
Scardinius racovitzai Cyprinidae 8
Barbus barbus (Barbel) Cyprinidae 6
Leuciscus leuciscus (Dace) Cyprinidae 6
Barbatula barbatula (Stone Loach) Nemacheilidae 6
Rutilus frisii Cyprinidae 4
Cottus bairdii Cottidae 2
Cyprinus carpio (Common Carp) Cyprinidae 2
Gobio muresius Cyprinidae 2
Gobio kovatschevi Cyprinidae 1
Potamorrhaphis guianensis Belonidae 1
Rutilus rubilio Cyprinidae 1

🪰 EPT Species (Mayflies, Stoneflies & Caddisflies)

7 EPT species detected (4 families, 15 ESVs — E:4 / P:0 / T:3)
SpeciesFamilyESVs
Ephemeroptera (Mayflies)
Serratella ignita (Blue Winged Olive) Ephemerellidae 4
Baetis rhodani (Large Dark Olive) Baetidae 3
Baetis buceratus (Scarce Olive) Baetidae 1
Baetis vernus (Medium Olive) Baetidae 1
Trichoptera (Caddisflies)
Limnephilus marmoratus (Northern Caddisflies) Limnephilidae 3
Glyphotaelius pellucidus (Northern Caddisflies) Limnephilidae 2
Lype phaeopa (Tube-case Caddisflies) Psychomyiidae 1

🔗 Your Ecological Twin

Most similar site: U6 - Stanborough South
River: Lea (same river)
Similarity: 56% of species shared
Download Data

260 Species detected at this site — CSV format, opens in Excel

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