MBSS Site Summary for: LWIN-306-X-2006
Located on Otter Point Creek in the Lower Winters Run watershed,
8-digit code: 02130702.
This stream was visited in the spring on 3/30/2006 and again in the summer on 8/16/2006.
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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Good - 4.3 / 5.0
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Benthic IBI
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Good - 4.1 / 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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36,834 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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19 %
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Agricultural Land Use
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45 %
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Forested Land Use
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34 %
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An example of woody debris in a stream.
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Physical Stream Habitat
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Instream Habitat
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17/20 (Optimal)
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Epifaunal Substrate
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11/20 (Suboptimal)
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Velocity/Depth Diversity
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18/20 (Optimal)
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Pool Quality
Pool Extent = 75 meters
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16/20 (Optimal)
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Riffle Quality
Riffle Extent = 61 meters
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16/20 (Optimal)
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Shading
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92 % |
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Embeddedness
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100 % |
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The embeddedness, a measure of silt on the stream bottom, was 100%. This is
very high, and may adversely affect biotic communities.
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Several measures of instream habitat were considered 'Optimal' at this location.
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Stream Water Quality:
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| Water temperature |
23.5 ° C
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| Dissolved oxygen (DO) |
7.8 mg/L
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| pH (lab) |
7.5 |
| Conductivity |
205 µmho/cm
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Alkalinity
(acid neutralizing capacity)
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553.1 µeq/L |
| Dissolved organic carbon (DOC) |
1.3803 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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| No amphibians and reptiles noted. |
| Japanese Honeysuckle |
| Japanese Stiltgrass |
| Multiflora Rose |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Tanytarsus |
Non-Biting Midges
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15 |
| Cheumatopsyche |
Net-Spinning Caddisfly
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10 |
| Macronychus |
Riffle Beetle
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9 |
| Hydrobaenus |
Midge
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8 |
| Stenonema |
Flatheaded Mayfly
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7 |
| Orthocladius |
Non-Biting Midges
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5 |
| Polypedilum |
Non-Biting Midges
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5 |
| Thienemannimyia group |
Non-Biting Midges
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4 |
| Microcylloepus |
Riffle Beetle
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3 |
| Ancyronyx |
Spider Riffle Beetle
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3 |
| Naididae |
Aquatic Worm
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3 |
| Hagenius |
Clubtail Dragonfly
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2 |
| Crangonyx |
Amphipod
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2 |
| Spirosperma |
Aquatic Oligochaete Worm
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2 |
| Hydropsyche |
Net-Spinning Caddisfly
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2 |
| Rheosmittia |
Non-Biting Midges
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2 |
| Tanypodinae |
Non-Biting Midges
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2 |
| Limnodrilus |
Worm
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1 |
| Lumbriculidae |
Worm
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1 |
| Trissopelopia |
Non-Biting Midges
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1 |
| Dubiraphia |
Riffle Beetle
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1 |
| Cricotopus |
Non-Biting Midges
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1 |
| Microtendipes |
Non-Biting Midges
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1 |
| Nanocladius |
Non-Biting Midges
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1 |
| Rheocricotopus |
Non-Biting Midges
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1 |
| Girardia |
Freshwater Flatworm
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1 |
| Serratella |
Mayfly
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1 |
| Berosus |
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1 |
| Gammarus |
Amphipod
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1 |
| Chimarra |
Fingernet Caddisfly
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1 |
| Tubificidae |
Aquatic Worm
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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.
