MBSS Site Summary for: LYOU-118-R-2004
Located on COTTON RUN in the Little Youghiogheny R watershed,
8-digit code: 05020202.
This stream was visited in the spring on 4/6/2004 and again in the summer on 6/24/2004.
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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Poor - 2.0 / 5.0
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Benthic IBI
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Fair - 3.8 / 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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390 acres
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An example of a forested stream.
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Urban Land Use
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7 %
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Agricultural Land Use
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40 %
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Forested Land Use
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50 %
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Stream Water Quality:
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| Water temperature |
16.7 ° C
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| Dissolved oxygen (DO) |
7.6 mg/L
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| pH (lab) |
6.8 |
| Conductivity |
65 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
159.2 µeq/L |
| Dissolved organic carbon (DOC) |
0.9 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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The following 3 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Common name |
Count |
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Blacknose Dace
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100 |
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Creek Chub
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23 |
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Fathead Minnow
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1 |
Electrofishing to sample fish communities.
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| No amphibians and reptiles noted. |
| Japanese Stiltgrass |
| Multiflora Rose |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Leuctra |
Rolled-Winged Stonefly
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13 |
| Optioservus |
Riffle Beetle
|
11 |
| Ephemerella |
Sulphur Mayfly
|
11 |
| Neophylax |
Caddisfly
|
8 |
| Stenonema |
Flatheaded Mayfly
|
5 |
| Pseudolimnophila |
Crane Fly
|
4 |
| Diploperla |
|
4 |
| Baetis |
Blue-Winged Olive Mayfly
|
3 |
| Caecidotea |
Isopod
|
3 |
| Diplectrona |
Net-Spinning Caddisfly
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2 |
| Parametriocnemus |
Non-Biting Midges
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2 |
| Tipula |
Crane Fly
|
2 |
| Rhyacophila |
Free-Living Caddisfly
|
2 |
| Dicranota |
Hairy-Eyed Cranefly
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2 |
| Tabanidae |
Horse Fly
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1 |
| Thienemanniella |
Non-Biting Midges
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1 |
| Thienemannimyia group |
Non-Biting Midges
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1 |
| Tvetenia |
Non-Biting Midges
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1 |
| Perlodidae |
Perlodid Stonefly
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1 |
| Micropsectra |
Non-Biting Midges
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1 |
| Natarsia |
Non-Biting Midges
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1 |
| Orthocladius |
Non-Biting Midges
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1 |
| Lumbriculidae |
Worm
|
1 |
| Oulimnius |
Riffle Beetle
|
1 |
| Amphinemura |
Spring 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.
