MBSS Site Summary for: PRLN-302-R-2007
Located on Collier Run in the Potomac River L N Branch watershed,
8-digit code: 02141001.
This stream was visited in the spring on 4/16/2007 and again in the summer on 6/8/2007.
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 - 4.0 / 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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4,111 acres
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An example of a forested stream.
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Urban Land Use
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3.7 %
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Agricultural Land Use
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11.2 %
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Forested Land Use
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85 %
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Stream Water Quality:
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| Water temperature |
17.2 ° C
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| Dissolved oxygen (DO) |
9.5 mg/L
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| pH (lab) |
6.9 |
| Conductivity |
151 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
146.97 µeq/L |
| Dissolved organic carbon (DOC) |
3.7403 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 Box Turtle |
| Northern Dusky Salamander |
| Northern Green Frog |
| Northern Red Salamander |
| Northern Two-Lined Salamander |
| Cambarus bartonii bartonii |
| Garlic Mustard |
| Japanese Stiltgrass |
| Multiflora Rose |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Micropsectra |
Non-Biting Midges
|
15 |
| Amphinemura |
Spring Stonefly
|
14 |
| Leuctridae |
Rolledwinged Stonefly
|
11 |
| Microtendipes |
Non-Biting Midges
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9 |
| Leptophlebiidae |
Pronggilled Mayfly
|
7 |
| Perlidae |
Common Stonefly
|
6 |
| Ephemerella |
Sulphur Mayfly
|
5 |
| Optioservus |
Riffle Beetle
|
5 |
| Ameletus |
Combmouthed Minnow Mayfly
|
4 |
| Heleniella |
European Non-Biting Midge
|
3 |
| Haploperla |
Green Stonefly
|
3 |
| Isoperla |
Stripetail Stonefly
|
3 |
| Polypedilum |
Non-Biting Midges
|
3 |
| Thienemannimyia group |
Non-Biting Midges
|
3 |
| Zavrelimyia |
Non-Biting Midges
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3 |
| Psephenus |
Water Penny
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2 |
| Ceratopogon |
Biting Midge
|
2 |
| Prosimulium |
Black Fly
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1 |
| Simulium |
Black Fly
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1 |
| Neophylax |
Caddisfly
|
1 |
| Stenelmis |
Beetle
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1 |
| Hexatoma |
Crane Fly
|
1 |
| Nigronia |
Megaloptera (Dark Fishfly)
|
1 |
| Diplectrona |
Net-Spinning Caddisfly
|
1 |
| Dicrotendipes |
Non-Biting Midges
|
1 |
| Heptageniidae |
Flathead Mayfly
|
1 |
| Rhyacophila |
Free-Living Caddisfly
|
1 |
| Parametriocnemus |
Non-Biting Midges
|
1 |
| Acerpenna |
Tiny Blue-Winged Olive Mayflies
|
1 |
| Polycentropus |
Tube Maker Caddisfly
|
1 |
| Pisidiidae |
Pill Clam
|
1 |
| Trissopelopia |
Non-Biting Midges
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1 |
| Dubiraphia |
Riffle Beetle
|
1 |
| Ancyronyx |
Spider Riffle 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.
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