MBSS Site Summary for: SOUT-109-R-2002
Located on FLAT CR in the South River watershed,
8-digit code: 02131003.
This stream was visited in the spring on 3/12/2002 and again in the summer on 6/4/2002.
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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Poor - 2.7 / 5.0
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Benthic IBI
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Fair - 3.6 / 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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216 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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9 %
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Agricultural Land Use
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72 %
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Forested Land Use
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20 %
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Stream Water Quality:
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| Water temperature |
17.2 ° C
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| Dissolved oxygen (DO) |
4.5 mg/L
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Dissolved oxygen levels measured in the stream were very low (4.5 mg/L).
Many fishes and other aquatic animals cannot tolerate low levels of oxygen in the water.
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| pH (lab) |
6.02 |
| Conductivity |
500 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
100.4 µeq/L |
| Dissolved organic carbon (DOC) |
1.9 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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| American Bullfrog |
| Northern Green Frog |
| Northern Two-Lined Salamander |
| Pickerel Frog |
| Japanese Honeysuckle |
| Multiflora Rose |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Parametriocnemus |
Non-Biting Midges
|
33 |
| Caecidotea |
Isopod
|
16 |
| Zavrelimyia |
Non-Biting Midges
|
11 |
| Synurella |
Amphipod
|
8 |
| Tanypodinae |
Non-Biting Midges
|
7 |
| Thienemannimyia group |
Non-Biting Midges
|
5 |
| Polypedilum |
Non-Biting Midges
|
4 |
| Orthocladiinae |
Midge
|
4 |
| Diplocladius |
Non-Biting Midges
|
3 |
| Tubificidae |
Aquatic Worm
|
3 |
| Pycnopsyche |
Great Autumn Brown Sedge Caddisfly
|
3 |
| Tanytarsini |
Non-Biting Midges
|
3 |
| Hydroporus |
Water Beetle
|
3 |
| Trissopelopia |
Non-Biting Midges
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2 |
| Natarsia |
Non-Biting Midges
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2 |
| Heterotrissocladius |
European Non-Biting Midge
|
2 |
| Ptilostomis |
Giant Casemaker Caddisfly
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2 |
| Dicranota |
Hairy-Eyed Cranefly
|
1 |
| Liogma |
|
1 |
| Physa |
Air-Breathing Freshwater Snail
|
1 |
| Microtendipes |
Non-Biting Midges
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1 |
| Phaenopsectra |
Non-Biting Midges
|
1 |
| Xylotopus |
Midge
|
1 |
| Diplectrona |
Net-Spinning Caddisfly
|
1 |
| Limnophyes |
Non-Biting Midge
|
1 |
| Odontomesa |
Non-Biting Midge
|
1 |
| Ironoquia |
Northern Caddisfly
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1 |
| Crangonyctidae |
Scud
|
1 |
| Microvelia |
Small Water Strider Beetle
|
1 |
| Ancyronyx |
Spider Riffle Beetle
|
1 |
| Cordulegaster |
Spiketail Dragonfly
|
1 |
| Polycentropus |
Tube Maker 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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