MBSS Site Summary for: LOCH-405-R-2007
Located on Little Falls in the Loch Raven Reservoir watershed,
8-digit code: 02130805.
This stream was visited in the spring on 3/20/2007 and again in the summer on 7/31/2007.
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 - 4.3 / 5.0
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Benthic IBI
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Good - 4.0 / 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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29,741 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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1.6 %
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Agricultural Land Use
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59.1 %
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Forested Land Use
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38.3 %
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Stream Water Quality:
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| Water temperature |
23.5 ° C
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| Dissolved oxygen (DO) |
9.2 mg/L
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| pH (lab) |
7.53 |
| Conductivity |
206 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
370.1 µeq/L |
| Dissolved organic carbon (DOC) |
0.9245 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 Spring Peeper |
| Northern Watersnake |
| Wood Frog |
| Garlic Mustard |
| Japanese Barberry |
| Japanese Honeysuckle |
| Japanese Stiltgrass |
| Mile-A-Minute |
| Multiflora Rose |
| Oriental Bittersweet |
| Privet |
| Shrub Honeysuckle |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Ephemerella |
Sulphur Mayfly
|
20 |
| Orthocladius |
Non-Biting Midges
|
18 |
| Cheumatopsyche |
Net-Spinning Caddisfly
|
7 |
| Antocha |
Crane Fly
|
6 |
| Diamesa |
Bloodworm
|
4 |
| Alloperla |
Stonefly
|
4 |
| Sympotthastia |
Non-Biting Midges
|
4 |
| Optioservus |
Riffle Beetle
|
3 |
| Hydropsyche |
Net-Spinning Caddisfly
|
2 |
| Parametriocnemus |
Non-Biting Midges
|
2 |
| Clinocera |
Aquatic Dance Fly
|
2 |
| Robackia |
European Non-Biting Midge
|
2 |
| Stenonema |
Flatheaded Mayfly
|
2 |
| Orthocladiinae |
Midge
|
2 |
| Stilocladius |
Midge
|
2 |
| Micropsectra |
Non-Biting Midges
|
2 |
| Epeorus |
Mayfly
|
1 |
| Calopteryx |
Damselfly
|
1 |
| Corydalus |
Dobsonfly
|
1 |
| Strophopteryx |
Early Brown Stonefly
|
1 |
| Enchytraeidae |
Aquatic Worm
|
1 |
| Tubificidae |
Aquatic Worm
|
1 |
| Helichus |
Beetle
|
1 |
| Stenelmis |
Beetle
|
1 |
| Ameletus |
Combmouthed Minnow Mayfly
|
1 |
| Leucotrichia |
|
1 |
| Synorthocladius |
|
1 |
| Stygobromus |
Amphipod
|
1 |
| Polypedilum |
Non-Biting Midges
|
1 |
| Rheosmittia |
Non-Biting Midges
|
1 |
| Cryptochironomus |
Non-Biting Midges
|
1 |
| Eukiefferiella |
Non-Biting Midges
|
1 |
| Isonychia |
Slate Drake Mayfly
|
1 |
| Boyeria |
Spotted Darner Dragonfly
|
1 |
| Ironoquia |
Northern Caddisfly
|
1 |
| Isoperla |
Stripetail Stonefly
|
1 |
| Psychomyia |
Trumpet-Net Caddisfly
|
1 |
| Lumbriculidae |
Worm
|
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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