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

Howerdon Creek Winterset

Invert Sampling Session #11588

Session Data

Sample Date
8/20/2025
Sampling Gear
Qualitative
Lab ID Number
2703493
Sample Quality
Good
Created Date
2/10/2026 10:15:08 AM
Last Update
2/20/2026 1:12:30 PM

Qualitative Benthic Habitat Inventory

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

No comments recorded.

Collected Benthic Macroinvertebrates

  • Total taxa collected 26
  • Total individuals collected 171
Scientific Name Order Family Common Name # Collected
Aeshna umbrosa Odonata Aeshnidae Darner Dragonflies 1
Anopheles Diptera Culicidae Mosquitoes 4
Baetidae Ephemeroptera Baetidae Small Minnow Mayflies 6
Baetis intercalaris Ephemeroptera Baetidae Small Minnow Mayflies 24
Callibaetis Ephemeroptera Baetidae Small Minnow Mayflies 1
Calopteryx Odonata Calopterygidae Broadwinged Damselflies 1
Cheumatopsyche Trichoptera Hydropsychidae Common Netspinner Caddisflies 32
Chironomidae Diptera Chironomidae Non-Biting Midges, Midges 20
Coenagrion/Enallagma Odonata Coenagrionidae Narrowwinged Damselflies 7
Erpobdella punctata Arhynchobdellida Erpobdellidae Leeches 1
Fallceon quilleri Ephemeroptera Baetidae Small Minnow Mayflies 4
Girardia Tricladida Dugesiidae Flatworms 4
Helichus striatus Coleoptera Dryopidae Long-Toed Water Beetles 1
Helicopsyche borealis Trichoptera Helicopsychidae Snailcase Maker Caddisflies 8
Heptagenia elegantula Ephemeroptera Heptageniidae Flatheaded Mayflies 1
Hetaerina Odonata Calopterygidae Broadwinged Damselflies 1
Hyalella Amphipoda Talitridae Scuds and sideswimmers 24
Hydropsychidae Trichoptera Hydropsychidae Common Netspinner Caddisflies 6
Hydroptila Trichoptera Hydroptilidae Micro Caddisflies 1
Labiobaetis propinquus Ephemeroptera Baetidae Small Minnow Mayflies 2
Leucrocuta Ephemeroptera Heptageniidae Flatheaded Mayflies 2
Macronychus glabratus Coleoptera Elmidae Riffle Beetles 2
Nectopsyche diarina Trichoptera Leptoceridae Longhorned Case Maker Caddisflies 1
Physa Basommatophora Physidae Physid Snails 2
Stenacron interpunctatum Ephemeroptera Heptageniidae Flatheaded Mayflies 12
Tricorythodes Ephemeroptera Leptohyphidae Little Stout Crawler Mayflies 3

= Excluded from taxa count metrics

Notes: