MBSS Site Summary for: NANJ-301-R-2015
Located on MILL RUN in the Nanjemoy Creek watershed,
8-digit code: 02140110.
This stream was visited in the spring on 3/12/2015 and again in the summer on 8/19/2015.
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
|
Good - 4.7 / 5.0
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Benthic IBI
|
Good - 5.0 / 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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6,320 acres
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An example of a forested stream.
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Urban Land Use
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8.3 %
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Agricultural Land Use
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11.5 %
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Forested Land Use
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76.8 %
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Stream Water Quality:
|
| pH (lab) |
6.3 |
Alkalinity
(acid neutralizing capacity)
|
61.1 µeq/L |
| Dissolved organic carbon (DOC) |
3.5852 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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| Fowler's Toad |
| Northern Spring Peeper |
| Orconectes limosus |
| Procambarus clarkii |
| Japanese Honeysuckle |
| Japanese Stiltgrass |
| Mile-A-Minute |
| Multiflora Rose |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Siphlonurus |
Gray Drake Mayfly
|
24 |
| Leptophlebia |
Pronggilled Mayfly
|
14 |
| Eurylophella |
Mayfly
|
9 |
| Nemouridae |
Nemourid Stonefly
|
7 |
| Anafroptilum |
Small Minnow Mayfly
|
7 |
| Paratanytarsus |
Non-Biting Midges
|
6 |
| Parametriocnemus |
Non-Biting Midges
|
3 |
| Corynoneura |
Non-Biting Midges
|
3 |
| Zavrelimyia |
Non-Biting Midges
|
3 |
| Limnephilidae |
Northern Casemaker Caddisfly
|
3 |
| Ephemerella |
Sulphur Mayfly
|
3 |
| Ephemerellidae |
Spiny Crawler Mayfly
|
3 |
| Acerpenna |
Tiny Blue-Winged Olive Mayflies
|
2 |
| Paramerina |
Non-Biting Midge
|
2 |
| Tanytarsus |
Non-Biting Midges
|
2 |
| Physa |
Air-Breathing Freshwater Snail
|
2 |
| Crangonyx |
Amphipod
|
2 |
| Synurella |
Amphipod
|
2 |
| Stenelmis |
Beetle
|
1 |
| Ceratopogonidae |
Biting Midge
|
1 |
| Prosimulium |
Black Fly
|
1 |
| Tipulidae |
Cranefly
|
1 |
| Strophopteryx |
Early Brown Stonefly
|
1 |
| Parakiefferiella |
European Non-Biting Midge
|
1 |
| Cheumatopsyche |
Net-Spinning Caddisfly
|
1 |
| Stenacron |
Mayfly
|
1 |
| Orthocladiinae |
Midge
|
1 |
| Caecidotea |
Isopod
|
1 |
| Leptoceridae |
Longhorned Casemaker Caddisfly
|
1 |
| Dolichopodidae |
Long-Legged Fly
|
1 |
| Paraphaenocladius |
Non-Biting Midges
|
1 |
| Procladius |
Non-Biting Midge
|
1 |
| Diplocladius |
Non-Biting Midges
|
1 |
| Orthocladius |
Non-Biting Midges
|
1 |
| Hemerodromia |
Tiny Fly
|
1 |
| Corixidae |
Water Boatman
|
1 |
| Dytiscidae |
Predaceous Diving Beetle
|
1 |
| Leptophlebiidae |
Pronggilled Mayfly
|
1 |
| Oulimnius |
Riffle Beetle
|
1 |
| Amphinemura |
Spring Stonefly
|
1 |
| Menetus |
Air Breathing Freshwater Snail
|
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.
