MBSS Site Summary for: PRET-101-X-2005
Located on Prettyboy Branch in the Prettyboy Reservoir watershed,
8-digit code: 02130806.
This stream was visited in the spring on 7/25/2005 and again in the summer on 7/26/2005.
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 - 4.0 / 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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1,109 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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1 %
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Agricultural Land Use
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87 %
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Forested Land Use
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12 %
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Stream Water Quality:
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| Water temperature |
21.7 ° C
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| Dissolved oxygen (DO) |
7.2 mg/L
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| Conductivity |
195 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. |
| 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 |
| Stenonema |
Flatheaded Mayfly
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23 |
| Cheumatopsyche |
Net-Spinning Caddisfly
|
9 |
| Ephemerella |
Sulphur Mayfly
|
9 |
| Hydropsyche |
Net-Spinning Caddisfly
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8 |
| Polypedilum |
Non-Biting Midges
|
8 |
| Rheosmittia |
Non-Biting Midges
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4 |
| Tanytarsus |
Non-Biting Midges
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4 |
| Cricotopus |
Non-Biting Midges
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4 |
| Hydrobaenus |
Midge
|
4 |
| Chimarra |
Fingernet Caddisfly
|
3 |
| Optioservus |
Riffle Beetle
|
3 |
| Cryptochironomus |
Non-Biting Midges
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3 |
| Serratella |
Mayfly
|
3 |
| Baetis |
Blue-Winged Olive Mayfly
|
3 |
| Antocha |
Crane Fly
|
2 |
| Orthocladius |
Non-Biting Midges
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2 |
| Thienemannimyia group |
Non-Biting Midges
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2 |
| Tvetenia |
Non-Biting Midges
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2 |
| Dubiraphia |
Riffle Beetle
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2 |
| Parametriocnemus |
Non-Biting Midges
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1 |
| Tipula |
Crane Fly
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1 |
| Stenelmis |
Beetle
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1 |
| Simulium |
Black Fly
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1 |
| Nigronia |
Megaloptera (Dark Fishfly)
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1 |
| Glossosoma |
Little Black Caddisfly
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1 |
| Oulimnius |
Riffle Beetle
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1 |
| Baetidae |
Small Minnow Mayfly
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1 |
| Boyeria |
Spotted Darner Dragonfly
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1 |
| Amphinemura |
Spring Stonefly
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1 |
| Lumbriculidae |
Worm
|
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.
