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Ben MacIntyre, biologist with the U.S. Army Corps of Engineers Nashville District Regulatory Division's Western Branch, verifies a stream delineation April 13, 2021 by looking for macroinvertebrate insect larvae (the aquatic lifecycle phase of certain types of insects) in a stream in Mt. Juliet, Tennessee. Many of these larvae live on the bottom side of rocks within streams. Each species requires a certain amount of time living in water, which can indicate the amount or duration of flow in a stream, depending on the species observed. Stream flow regime (ephemeral, intermittent or perennial) is used in part to assess a stream’s function, from which impact debits are tabulated to calculate the amount of mitigation required to offset a project’s impacts to aquatic resources. (USACE Photo by Sammy Iskrzycki)
| Date Taken: | 04.13.2021 |
| Date Posted: | 03.24.2022 13:46 |
| Photo ID: | 7107529 |
| VIRIN: | 210413-A-A1409-1021 |
| Resolution: | 4608x3456 |
| Size: | 11.74 MB |
| Location: | MT. JULIET, TN, US |
| Web Views: | 37 |
| Downloads: | 5 |
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Regulatory Program facilitates environmental stewardship
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