MBSS Site Summary for: NANJ-115-R-2014
Located on HILL TOP FORK UT in the Nanjemoy Creek watershed,
8-digit code: 02140110.
This stream was visited in the spring on 4/2/2014 and again in the summer on 6/26/2014.
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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Good - 5.0 / 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.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
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Catchment area
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876 acres
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An example of a highly channelized urban stream.
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Urban Land Use
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8.5 %
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Agricultural Land Use
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0.8 %
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Forested Land Use
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74.4 %
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Stream Water Quality:
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| pH (lab) |
6.05 |
Alkalinity
(acid neutralizing capacity)
|
47.2 µeq/L |
| Dissolved organic carbon (DOC) |
5.8717 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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| Eastern American Toad |
| Eastern Box Turtle |
| Eastern Cricket Frog |
| Eastern Red Spotted Newt |
| Northern Fence Lizard |
| Northern Green Frog |
| Northern Spring Peeper |
| Northern Water Snake |
| Orconectes limosus |
| Procambarus clarkii |
| Empress Tree |
| Japanese Honeysuckle |
| Japanese Stiltgrass |
| Multiflora Rose |
| Wineberry |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Cheumatopsyche |
Net-Spinning Caddisfly
|
42 |
| Heptageniidae |
Flathead Mayfly
|
9 |
| Maccaffertium |
March Brown And Cahill Mayfly
|
7 |
| Hydropsyche |
Net-Spinning Caddisfly
|
6 |
| Microtendipes |
Non-Biting Midges
|
6 |
| Psephenus |
Water Penny
|
5 |
| Stempellina |
|
5 |
| Polypedilum |
Non-Biting Midges
|
4 |
| Rheocricotopus |
Non-Biting Midges
|
3 |
| Simulium |
Black Fly
|
3 |
| Nigronia |
Megaloptera (Dark Fishfly)
|
3 |
| Pycnopsyche |
Great Autumn Brown Sedge Caddisfly
|
2 |
| Oulimnius |
Riffle Beetle
|
2 |
| Eukiefferiella |
Non-Biting Midges
|
2 |
| Nyctiophylax |
|
1 |
| Eccoptura |
Yellow Stone Stonefly
|
1 |
| Ancyronyx |
Spider Riffle Beetle
|
1 |
| Amphinemura |
Spring Stonefly
|
1 |
| Acerpenna |
Tiny Blue-Winged Olive Mayflies
|
1 |
| Polycentropus |
Tube Maker Caddisfly
|
1 |
| Tribelos |
Non-Biting Midges
|
1 |
| Tvetenia |
Non-Biting Midges
|
1 |
| Eurylophella |
Mayfly
|
1 |
| Gomphidae |
Clubtail Dragonfly
|
1 |
| Bezzia |
Biting Midge
|
1 |
| Prosimulium |
Black Fly
|
1 |
| Orthocladiinae |
Midge
|
1 |
| Psilotreta |
Mortarjoint Casemaker Caddisfly
|
1 |
| Nemouridae |
Nemourid Stonefly
|
1 |
| Ablabesmyia |
Non-Biting Midge
|
1 |
| Unniella |
Non-Biting Midge
|
1 |
| Cricotopus |
Non-Biting Midges
|
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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