MBSS Site Summary for: LOCH-404-R-2002
Located on WESTERN RUN in the Loch Raven Reservoir watershed,
8-digit code: 02130805.
This stream was visited in the spring on 4/3/2002 and again in the summer on 7/29/2002.
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 - 4.0 / 5.0
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Benthic IBI
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Fair - 3.7 / 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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24,284 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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64 %
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Forested Land Use
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33 %
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Stream Water Quality:
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| Water temperature |
24.5 ° C
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| Dissolved oxygen (DO) |
7.1 mg/L
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| pH (lab) |
7.84 |
| Conductivity |
300 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
1630 µeq/L |
| Dissolved organic carbon (DOC) |
1.7 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 |
| 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 |
| Orthocladius |
Non-Biting Midges
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38 |
| Orthocladiinae |
Midge
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24 |
| Naididae |
Aquatic Worm
|
17 |
| Optioservus |
Riffle Beetle
|
15 |
| Antocha |
Crane Fly
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10 |
| Serratella |
Mayfly
|
9 |
| Tvetenia |
Non-Biting Midges
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9 |
| Stenelmis |
Beetle
|
8 |
| Ephemerella |
Sulphur Mayfly
|
8 |
| Parametriocnemus |
Non-Biting Midges
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7 |
| Stenonema |
Flatheaded Mayfly
|
6 |
| Girardia |
Freshwater Flatworm
|
5 |
| Cheumatopsyche |
Net-Spinning Caddisfly
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5 |
| Hydropsyche |
Net-Spinning Caddisfly
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5 |
| Sympotthastia |
Non-Biting Midges
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5 |
| Conchapelopia |
Non-Biting Midges
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5 |
| Oulimnius |
Riffle Beetle
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5 |
| Eukiefferiella |
Non-Biting Midges
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4 |
| Tanytarsini |
Non-Biting Midges
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3 |
| Hemerodromia |
Tiny Fly
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3 |
| Psephenus |
Water Penny
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2 |
| Polypedilum |
Non-Biting Midges
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2 |
| Microtendipes |
Non-Biting Midges
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2 |
| Elmidae |
Riffle Beetle
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2 |
| Glossosomatidae |
Saddlecase Maker Caddisfly
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2 |
| Heptageniidae |
Flathead Mayfly
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2 |
| Leucotrichia |
|
2 |
| Perlesta |
|
1 |
| Crangonyx |
Amphipod
|
1 |
| Simulium |
Black Fly
|
1 |
| Gordiidae |
Horsehair Worm
|
1 |
| Caecidotea |
Isopod
|
1 |
| Tipulidae |
Cranefly
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1 |
| Chimarra |
Fingernet Caddisfly
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1 |
| Pseudochironomus |
Non-Biting Midge
|
1 |
| Lype |
Net Tube Caddisfly
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1 |
| Amphinemura |
Spring Stonefly
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1 |
| Prostoia |
Spring Stonefly
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1 |
| Rheocricotopus |
Non-Biting Midges
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1 |
| Rheosmittia |
Non-Biting Midges
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1 |
| Tanytarsus |
Non-Biting Midges
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1 |
| Thienemanniella |
Non-Biting Midges
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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.
