MBSS Site Summary for: PRAL-103-R-2001
Located on POTOMAC R UT11 in the Potomac River AL Cnty watershed,
8-digit code: 02140508.
This stream was visited in the spring on 3/27/2001 and again in the summer on 7/30/2001.
Index of Biotic Integrity (IBI) Results:
An Index of Biotic Integrity (IBI) is a scientific tool used to identify and classify stream health. An IBI associates anthropogenic influences on a stream or with biological condition in the stream, and is formulated using data developed from biosurveys.
Details on the development and application of MBSS IBIs are in this document.
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Fish IBI
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N R |
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Benthic IBI
|
Poor - 2.3 / 5.0
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Land Use
Land use can provide important information for determining stream health.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
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Catchment area
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157 acres
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An example of a highly channelized urban stream.
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Urban Land Use
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0 %
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Agricultural Land Use
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0 %
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Forested Land Use
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100 %
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Stream Water Quality:
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| pH (lab) |
6.43 |
Alkalinity
(acid neutralizing capacity)
|
51.7 µeq/L |
| Dissolved organic carbon (DOC) |
1.8 mg/L |
Biological Stream Condition:
Surveys of the organisms living within a stream can give indications of stream health. Species richness, or the number of different species present, as well as indicator species (species whose presence, absence or abundance can serve as a measure of environmental conditions) are informative for stream health.
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| Fish data is unavailable or no fish observed. |
| No amphibians and reptiles noted. |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Paraphaenocladius |
Non-Biting Midges
|
29 |
| Leuctridae |
Rolledwinged Stonefly
|
25 |
| Caecidotea |
Isopod
|
13 |
| Amphinemura |
Spring Stonefly
|
6 |
| Wormaldia |
Fingernet Caddisfly
|
5 |
| Crangonyx |
Amphipod
|
5 |
| Chloroperlidae |
Green Stonefly
|
4 |
| Ceratopogon |
Biting Midge
|
3 |
| Prosimulium |
Black Fly
|
3 |
| Stegopterna |
Black Fly
|
3 |
| Nemouridae |
Nemourid Stonefly
|
3 |
| Lumbriculidae |
Worm
|
2 |
| Micropsectra |
Non-Biting Midges
|
1 |
| Perlodidae |
Perlodid Stonefly
|
1 |
| Heptageniidae |
Flathead Mayfly
|
1 |
| Rhyacophila |
Free-Living Caddisfly
|
1 |
| Lepidostoma |
Little Brown Sedge Caddisfly
|
1 |
| Paraleptophlebia |
Blue Quill Mayfly
|
1 |
| Enchytraeidae |
Aquatic Worm
|
1 |
| Homoplectra |
|
1 |
| Stempellina |
|
1 |
Sampling with a kick net.
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Information disclaimer: The information and data on this page is for guidance and general planning purposes only. It should not be used to make decisions on specific matters.
