MBSS Site Summary for: LIBE-214-A-2007
Located on West Branch of North Branch Patapsco River in the Liberty Reservoir watershed,
8-digit code: 02130907.
This stream was visited in the spring on 3/14/2007 and again in the summer on 8/3/2007.
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 - 5.0 / 5.0
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Benthic IBI
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Poor - 2.3 / 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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12,556 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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12.4 %
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Agricultural Land Use
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60.3 %
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Forested Land Use
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26.4 %
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Stream Water Quality:
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| Water temperature |
23.8 ° C
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| Dissolved oxygen (DO) |
8.6 mg/L
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| pH (lab) |
7.57 |
| Conductivity |
286 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
720.3 µeq/L |
| Dissolved organic carbon (DOC) |
0.8702 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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| Northern Slimy Salamander |
| Northern Two-Lined Salamander |
| Northern Watersnake |
| Wood Frog |
| Garlic Mustard |
| Japanese Barberry |
| Japanese Honeysuckle |
| Japanese Hops |
| Japanese Knotweed |
| Japanese Stiltgrass |
| Mile-A-Minute |
| Multiflora Rose |
| Oriental Bittersweet |
| Privet |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Orthocladius |
Non-Biting Midges
|
24 |
| Parametriocnemus |
Non-Biting Midges
|
17 |
| Chimarra |
Fingernet Caddisfly
|
17 |
| Antocha |
Crane Fly
|
9 |
| Clinocera |
Aquatic Dance Fly
|
8 |
| Cheumatopsyche |
Net-Spinning Caddisfly
|
7 |
| Tvetenia |
Non-Biting Midges
|
4 |
| Polypedilum |
Non-Biting Midges
|
3 |
| Sympotthastia |
Non-Biting Midges
|
3 |
| Leucotrichia |
|
2 |
| Microtendipes |
Non-Biting Midges
|
2 |
| Psephenus |
Water Penny
|
2 |
| Polycentropus |
Tube Maker Caddisfly
|
1 |
| Thienemannimyia group |
Non-Biting Midges
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1 |
| Trissopelopia |
Non-Biting Midges
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1 |
| Rheocricotopus |
Non-Biting Midges
|
1 |
| Hydropsyche |
Net-Spinning Caddisfly
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1 |
| Brillia |
Non-Biting Midges
|
1 |
| Acroneuria |
Golden Stoneflies
|
1 |
| Orthocladiinae |
Midge
|
1 |
| Stenelmis |
Beetle
|
1 |
| Diamesa |
Bloodworm
|
1 |
| Tipula |
Crane Fly
|
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.
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