Iowa DNR
BioNet
River & Stream Biological Monitoring
Fish and Benthic Macroinvertebrate Surveys
Physical Habitat Assessments

North Walnut Creek Pleasant Plain (new downstream site)

Invert Sampling Session #10898

Session Data

Sample Date
8/13/2024
Sampling Gear
Qualitative
Lab ID Number
2478993
Sample Quality
Good
Created Date
12/12/2024 2:01:01 PM
Last Update
12/27/2024 7:36:16 AM

Qualitative Benthic Habitat Inventory

Abundance/
Rank
Substrate Presence
Pool/Glide
Presence
Riffle/Run
1 Fine Sediments
2 Woody Debris
3 Clay/Hardpan
4 Leaf/Detritus Packs
5 Roots/Undercut Banks
Coarse Rock
Streambank Vegetation
Bedrock/Large Boulders
Concrete Riprap
Comments

No comments recorded.

Collected Benthic Macroinvertebrates

  • Total taxa collected 30
  • Total individuals collected 172
Scientific Name Order Family Common Name # Collected
Acerpenna pygmaea Ephemeroptera Baetidae Small Minnow Mayflies 13
Anopheles Diptera Culicidae Mosquitoes 5
Aquarius Hemiptera Gerridae Water Striders 1
Argia Odonata Coenagrionidae Narrowwinged Damselflies 2
Baetis flavistriga Ephemeroptera Baetidae Small Minnow Mayflies 1
Baetis intercalaris Ephemeroptera Baetidae Small Minnow Mayflies 7
Boyeria vinosa Odonata Aeshnidae Darner Dragonflies 1
Caenis latipennis Ephemeroptera Caenidae Small Squaregill Mayflies 1
Calopteryx Odonata Calopterygidae Broadwinged Damselflies 3
Cheumatopsyche Trichoptera Hydropsychidae Common Netspinner Caddisflies 65
Chironomidae Diptera Chironomidae Non-Biting Midges, Midges 8
Coenagrion/Enallagma Odonata Coenagrionidae Narrowwinged Damselflies 10
Dubiraphia minima Coleoptera Elmidae Riffle Beetles 2
Erpobdella punctata Arhynchobdellida Erpobdellidae Leeches 4
Faxonius virilis Decapoda Cambaridae Crayfishes 1
Girardia Tricladida Dugesiidae Flatworms 6
Helichus fastigiatus Coleoptera Dryopidae Long-Toed Water Beetles 2
Helicopsyche borealis Trichoptera Helicopsychidae Snailcase Maker Caddisflies 2
Labiobaetis propinquus Ephemeroptera Baetidae Small Minnow Mayflies 6
Nectopsyche diarina Trichoptera Leptoceridae Longhorned Case Maker Caddisflies 1
Oecetis nocturna Trichoptera Leptoceridae Longhorned Case Maker Caddisflies 1
Peltodytes duodecimpuntatus Coleoptera Haliplidae Crawling Water Beetles 1
Physa Basommatophora Physidae Physid Snails 5
Scirtidae Coleoptera Scirtidae Marsh Beetles 1
Simulium Diptera Simuliidae Black Flies 3
Somatochlora Odonata Corduliidae Greeneyed Skimmers 1
Sphaeriidae Veneroida Sphaeriidae Fingernail clams 1
Stenacron interpunctatum Ephemeroptera Heptageniidae Flatheaded Mayflies 15
Stenelmis sexlineata Coleoptera Elmidae Riffle Beetles 2
Tipula Diptera Tipulidae Crane Flies 1

= Excluded from taxa count metrics

Notes: