MBSS Site Summary for: LIGU-201-A-2008
Located on LITTLE GUNPOWDER FALLS in the Little Gunpowder Falls watershed,
8-digit code: 02130804.
This stream was visited in the spring on 3/24/2008 and again in the summer on 7/18/2008.
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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17,462 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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2.6 %
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Agricultural Land Use
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66.6 %
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Forested Land Use
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30 %
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Stream Water Quality:
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| Water temperature |
25.2 ° C
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| Dissolved oxygen (DO) |
9.4 mg/L
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| pH (lab) |
7.44 |
| Conductivity |
186 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
586.6 µeq/L |
| Dissolved organic carbon (DOC) |
1.1312 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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| Gray Treefrog |
| Northern Green Frog |
| Northern Two-Lined Salamander |
| Pickerel Frog |
| Wood Frog |
| Garlic Mustard |
| Giant Hogweed |
| 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 |
| Orthocladius |
Non-Biting Midges
|
24 |
| Cheumatopsyche |
Net-Spinning Caddisfly
|
19 |
| Hydropsyche |
Net-Spinning Caddisfly
|
11 |
| Ephemerellidae |
Spiny Crawler Mayfly
|
9 |
| Maccaffertium |
March Brown And Cahill Mayfly
|
6 |
| Prosimulium |
Black Fly
|
4 |
| Antocha |
Crane Fly
|
4 |
| Ephemerella |
Sulphur Mayfly
|
4 |
| Orthocladiinae |
Midge
|
3 |
| Rheotanytarsus |
Non-Biting Midges
|
3 |
| Clinocera |
Aquatic Dance Fly
|
3 |
| Eukiefferiella |
Non-Biting Midges
|
3 |
| Microtendipes |
Non-Biting Midges
|
2 |
| Polypedilum |
Non-Biting Midges
|
2 |
| Robackia |
European Non-Biting Midge
|
2 |
| Prostoia |
Spring Stonefly
|
2 |
| Thienemanniella |
Non-Biting Midges
|
2 |
| Tvetenia |
Non-Biting Midges
|
1 |
| Optioservus |
Riffle Beetle
|
1 |
| Oulimnius |
Riffle Beetle
|
1 |
| Promoresia |
Riffle Beetle
|
1 |
| Isonychia |
Slate Drake Mayfly
|
1 |
| Sympotthastia |
Non-Biting Midges
|
1 |
| Tanytarsus |
Non-Biting Midges
|
1 |
| Polycentropus |
Tube Maker Caddisfly
|
1 |
| Dineutus |
Whirlygig Beetle
|
1 |
| Chimarra |
Fingernet Caddisfly
|
1 |
| Prostoma |
Freshwater Nemertean (Ribbon Worm)
|
1 |
| Micrasema |
|
1 |
| Simuliidae |
Black Fly
|
1 |
| Drunella |
Blue-Winged Olive Mayfly
|
1 |
| Hydrobaenus |
Midge
|
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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