MBSS Site Summary for: LIBE-209-A-2007
Located on North Branch Patapsco River UT2 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 6/5/2007.
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 - 4.0 / 5.0
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Benthic IBI
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Fair - 3.3 / 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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1,380 acres
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An example of a forested stream.
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Urban Land Use
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9.5 %
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Agricultural Land Use
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40.2 %
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Forested Land Use
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50.2 %
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Stream Water Quality:
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| Water temperature |
18.2 ° C
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| Dissolved oxygen (DO) |
8.8 mg/L
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| pH (lab) |
7.35 |
| Conductivity |
275 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
650.8 µeq/L |
| Dissolved organic carbon (DOC) |
0.4726 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 Dusky Salamander |
| Northern Spring Peeper |
| Northern Two-Lined Salamander |
| Garlic Mustard |
| Japanese Barberry |
| Japanese Honeysuckle |
| Japanese Knotweed |
| Japanese Stiltgrass |
| Mile-A-Minute |
| Multiflora Rose |
| Oriental Bittersweet |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Ephemerella |
Sulphur Mayfly
|
17 |
| Sympotthastia |
Non-Biting Midges
|
15 |
| Prosimulium |
Black Fly
|
13 |
| Hydropsyche |
Net-Spinning Caddisfly
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11 |
| Oulimnius |
Riffle Beetle
|
6 |
| Prostoia |
Spring Stonefly
|
6 |
| Orthocladius |
Non-Biting Midges
|
5 |
| Neophylax |
Caddisfly
|
5 |
| Cheumatopsyche |
Net-Spinning Caddisfly
|
4 |
| Antocha |
Crane Fly
|
3 |
| Chloroperlidae |
Green Stonefly
|
3 |
| Amphinemura |
Spring Stonefly
|
3 |
| Rheosmittia |
Non-Biting Midges
|
3 |
| Optioservus |
Riffle Beetle
|
2 |
| Paraphaenocladius |
Non-Biting Midges
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2 |
| Tanytarsus |
Non-Biting Midges
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2 |
| Chimarra |
Fingernet Caddisfly
|
2 |
| Rhyacophila |
Free-Living Caddisfly
|
1 |
| Dicranota |
Hairy-Eyed Cranefly
|
1 |
| Nigronia |
Megaloptera (Dark Fishfly)
|
1 |
| Tipula |
Crane Fly
|
1 |
| Simulium |
Black Fly
|
1 |
| Diamesa |
Bloodworm
|
1 |
| Leuctra |
Rolled-Winged Stonefly
|
1 |
| Parametriocnemus |
Non-Biting Midges
|
1 |
| Cladotanytarsus |
Non-Biting Midge
|
1 |
| Eukiefferiella |
Non-Biting Midges
|
1 |
| Nanocladius |
Non-Biting Midges
|
1 |
| Thienemannimyia group |
Non-Biting Midges
|
1 |
| Tvetenia |
Non-Biting Midges
|
1 |
| Polypedilum |
Non-Biting Midges
|
1 |
| Eccoptura |
Yellow Stone Stonefly
|
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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