MBSS Site Summary for: PRMT-157-X-2006
Located on Potomac River UT33 in the Potomac River M tidal watershed,
8-digit code: 02140102.
This stream was visited in the spring on 3/28/2006 and again in the summer on 6/7/2006.
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 - 3.0 / 5.0
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Benthic IBI
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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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176 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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1 %
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Forested Land Use
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99 %
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Stream Water Quality:
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| Water temperature |
17.2 ° C
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| Dissolved oxygen (DO) |
8 mg/L
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| pH (lab) |
6.56 |
| Conductivity |
46 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
158.6 µeq/L |
| Dissolved organic carbon (DOC) |
2.285 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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| Common Five-Lined Skink |
| Eastern Box Turtle |
| Eastern Cricket Frog |
| Eastern Ratsnake |
| Gray Treefrog |
| Northern Green Frog |
| Northern Two-Lined Salamander |
| Northern Watersnake |
| Red-Spotted Newt |
| Cambaridae |
| Cambarus bartonii bartonii |
| Procambarus clarkii |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Parametriocnemus |
Non-Biting Midges
|
24 |
| Leptophlebiidae |
Pronggilled Mayfly
|
12 |
| Helisoma |
|
7 |
| Tipula |
Crane Fly
|
5 |
| Ablabesmyia |
Non-Biting Midge
|
4 |
| Leuctra |
Rolled-Winged Stonefly
|
4 |
| Leptophlebia |
Pronggilled Mayfly
|
4 |
| Stempellinella |
Non-Biting Midges
|
3 |
| Tribelos |
Non-Biting Midges
|
3 |
| Unniella |
Non-Biting Midge
|
3 |
| Calopteryx |
Damselfly
|
2 |
| Sialis |
Alderfly
|
2 |
| Anisocentropus |
|
2 |
| Zavrelimyia |
Non-Biting Midges
|
2 |
| Polypedilum |
Non-Biting Midges
|
2 |
| Lumbriculidae |
Worm
|
2 |
| Acerpenna |
Tiny Blue-Winged Olive Mayflies
|
1 |
| Polycentropus |
Tube Maker Caddisfly
|
1 |
| Rheosmittia |
Non-Biting Midges
|
1 |
| Tanypodinae |
Non-Biting Midges
|
1 |
| Thienemannimyia group |
Non-Biting Midges
|
1 |
| Pisidiidae |
Pill Clam
|
1 |
| Trissopelopia |
Non-Biting Midges
|
1 |
| Dixella |
|
1 |
| Libellula |
|
1 |
| Simulium |
Black Fly
|
1 |
| Stegopterna |
Black Fly
|
1 |
| Heteroplectron |
Caddisfly
|
1 |
| Phylocentropus |
Caddisfly
|
1 |
| Pseudolimnophila |
Crane Fly
|
1 |
| Ptilostomis |
Giant Casemaker Caddisfly
|
1 |
| Pycnopsyche |
Great Autumn Brown Sedge Caddisfly
|
1 |
| Coenagrionidae |
Narrowwinged Damselfly
|
1 |
| Lype |
Net Tube Caddisfly
|
1 |
| Micropsectra |
Non-Biting Midges
|
1 |
| Nanocladius |
Non-Biting Midges
|
1 |
| Natarsia |
Non-Biting Midges
|
1 |
| Orthocladius |
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.
