MBSS Site Summary for: NANJ-101-B-2008
Located on UT TO WARD'S RUN in the Nanjemoy Creek watershed,
8-digit code: 02140110.
This stream was visited in the spring on 3/12/2008 and again in the summer on 6/10/2008.
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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Fair - 3.3 / 5.0
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Benthic IBI
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Good - 4.7 / 5.0
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Land Use
Land use can provide important information for determining stream health.
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Catchment area
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428 acres
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An example of a forested stream.
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Urban Land Use
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0.3 %
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Agricultural Land Use
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8.2 %
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Forested Land Use
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90.6 %
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Stream Water Quality:
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| Water temperature |
21.4 ° C
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| Dissolved oxygen (DO) |
8.1 mg/L
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| pH (lab) |
5.85 |
| Conductivity |
29 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
31.1 µeq/L |
| Dissolved organic carbon (DOC) |
4.5318 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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| American Bullfrog |
| Northern Green Frog |
| Northern Two-Lined Salamander |
| Cambarus bartonii bartonii |
| Cambarus diogenes |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Tanytarsus |
Non-Biting Midges
|
10 |
| Maccaffertium |
March Brown And Cahill Mayfly
|
9 |
| Hexatoma |
Crane Fly
|
7 |
| Stegopterna |
Black Fly
|
6 |
| Parametriocnemus |
Non-Biting Midges
|
6 |
| Lumbriculidae |
Worm
|
5 |
| Stempellinella |
Non-Biting Midges
|
5 |
| Stenelmis |
Beetle
|
4 |
| Psilotreta |
Mortarjoint Casemaker Caddisfly
|
3 |
| Thienemannimyia Group |
Non-Biting Midges
|
3 |
| Cheumatopsyche |
Net-Spinning Caddisfly
|
3 |
| Boyeria |
Spotted Darner Dragonfly
|
3 |
| Elmidae |
Riffle Beetle
|
2 |
| Ablabesmyia |
Non-Biting Midge
|
2 |
| Unniella |
Non-Biting Midge
|
2 |
| Eukiefferiella |
Non-Biting Midges
|
2 |
| Zavrelimyia |
Non-Biting Midges
|
2 |
| Stenochironomus |
European Non-Biting Midge
|
2 |
| Lanthus |
Clubtail Dragonfly
|
2 |
| Bezzia |
Biting Midge
|
1 |
| Crangonyx |
Amphipod
|
1 |
| Spirosperma |
Aquatic Oligochaete Worm
|
1 |
| Naididae |
Aquatic Worm
|
1 |
| Tubificidae |
Aquatic Worm
|
1 |
| Triaenodes |
Long-Horned Caddisfly
|
1 |
| Pseudolimnophila |
Crane Fly
|
1 |
| Nemouridae |
Nemourid Stonefly
|
1 |
| Nigronia |
Megaloptera (Dark Fishfly)
|
1 |
| Limnephilidae |
Northern Casemaker Caddisfly
|
1 |
| Leptophlebiidae |
Pronggilled Mayfly
|
1 |
| Rheocricotopus |
Non-Biting Midges
|
1 |
| Rheotanytarsus |
Non-Biting Midges
|
1 |
| Thienemanniella |
Non-Biting Midges
|
1 |
| Labrundinia |
Non-Biting Midges
|
1 |
| Orthocladius |
Non-Biting Midges
|
1 |
| Alotanypus |
Non-Biting Midges
|
1 |
| Procladius |
Non-Biting Midge
|
1 |
| Psectrocladius |
Non-Biting Midge
|
1 |
| Hydropsyche |
Net-Spinning Caddisfly
|
1 |
| Optioservus |
Riffle Beetle
|
1 |
| Oulimnius |
Riffle Beetle
|
1 |
| Isoperla |
Stripetail Stonefly
|
1 |
| Eccoptura |
Yellow Stone Stonefly
|
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.
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