MBSS Site Summary for: PRET-112-X-2005
Located on Grave Run in the Prettyboy Reservoir watershed,
8-digit code: 02130806.
This stream was visited in the spring on 8/1/2005 and again in the summer on 8/1/2005.
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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N R |
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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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526 acres
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Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
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Urban Land Use
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2 %
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Agricultural Land Use
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68 %
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Forested Land Use
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30 %
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Stream Water Quality:
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| Water temperature |
18.6 ° C
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| Dissolved oxygen (DO) |
9.1 mg/L
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| Conductivity |
207 µmho/cm
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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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| Fish data is unavailable or no fish observed. |
| No amphibians and reptiles noted. |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Ephemerella |
Sulphur Mayfly
|
27 |
| Amphinemura |
Spring Stonefly
|
14 |
| Polypedilum |
Non-Biting Midges
|
10 |
| Rheosmittia |
Non-Biting Midges
|
6 |
| Antocha |
Crane Fly
|
5 |
| Optioservus |
Riffle Beetle
|
5 |
| Cricotopus |
Non-Biting Midges
|
4 |
| Leptophlebiidae |
Pronggilled Mayfly
|
4 |
| Chelifera |
Aquatic Dance Fly
|
4 |
| Diplectrona |
Net-Spinning Caddisfly
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4 |
| Serratella |
Mayfly
|
3 |
| Simulium |
Black Fly
|
3 |
| Parametriocnemus |
Non-Biting Midges
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3 |
| Hydropsyche |
Net-Spinning Caddisfly
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2 |
| Cheumatopsyche |
Net-Spinning Caddisfly
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1 |
| Thienemannimyia group |
Non-Biting Midges
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1 |
| Trissopelopia |
Non-Biting Midges
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1 |
| Tvetenia |
Non-Biting Midges
|
1 |
| Perlodidae |
Perlodid Stonefly
|
1 |
| Stegopterna |
Black Fly
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1 |
| Baetis |
Blue-Winged Olive Mayfly
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1 |
| Prosimulium |
Black Fly
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1 |
| Simuliidae |
Black Fly
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1 |
| Tipula |
Crane Fly
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1 |
| Stenonema |
Flatheaded Mayfly
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1 |
| Rhyacophila |
Free-Living Caddisfly
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1 |
| Eurylophella |
Mayfly
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1 |
| Orthocladius |
Non-Biting Midges
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1 |
| Baetidae |
Small Minnow Mayfly
|
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.
