MBSS Site Summary for: AL-A-373-113-96
Located on SEVEN SPRINGS RUN UT1 in the Potomac River L N Branch watershed,
8-digit code: 02141001.
This stream was visited in the spring on 4/4/1996 and again in the summer on 6/19/1996.
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
|
Fair - 3.5 / 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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187 acres
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An example of a forested stream.
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Urban Land Use
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0 %
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Agricultural Land Use
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30.5 %
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Forested Land Use
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69.5 %
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Stream Water Quality:
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| pH (lab) |
7.96 |
Alkalinity
(acid neutralizing capacity)
|
1651 µeq/L |
| Dissolved organic carbon (DOC) |
2.1 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 |
| Gammarus |
Amphipod
|
15 |
| Baetis |
Blue-Winged Olive Mayfly
|
15 |
| Ephemerella |
Sulphur Mayfly
|
15 |
| Optioservus |
Riffle Beetle
|
14 |
| Diplectrona |
Net-Spinning Caddisfly
|
11 |
| Anchytarsus |
Beetle
|
11 |
| Simulium |
Black Fly
|
11 |
| Hydropsyche |
Net-Spinning Caddisfly
|
6 |
| Dicranota |
Hairy-Eyed Cranefly
|
3 |
| Heleniella |
European Non-Biting Midge
|
2 |
| Stenonema |
Flatheaded Mayfly
|
1 |
| Eurylophella |
Mayfly
|
1 |
| Hexatoma |
Crane Fly
|
1 |
| Tipula |
Crane Fly
|
1 |
| Micropsectra |
Non-Biting Midges
|
1 |
| Parametriocnemus |
Non-Biting Midges
|
1 |
| Perlodidae |
Perlodid Stonefly
|
1 |
| Cordulegaster |
Spiketail Dragonfly
|
1 |
| Amphinemura |
Spring Stonefly
|
1 |
| Agapetus |
Tiny Black Short-Horned Caddisfly
|
1 |
| Ectopria |
Water Penny Beetle
|
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.
