MBSS Site Summary for: MO-P-436-226-97


Located on POTOMAC R UT8 in the Potomac River MO Cnty watershed, 8-digit code: 02140202.
This stream was visited in the spring on 3/13/1997 and again in the summer on 6/5/1997.

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.
Fish IBI Poor - 1.3 / 5.0
Benthic IBI Poor - 1.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 1,127 acres Cows standing in a stream at a site with high agricultural land use. Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
Urban Land Use 0.1 %
Agricultural Land Use 51.6 %
Forested Land Use 48.3 %


Stream showing woody debris, logs, and rocky substrate.
An example of woody debris in a stream.

Physical Stream Habitat
Instream Habitat 5/20 (Poor)
Epifaunal Substrate 6/20 (Marginal)
Velocity/Depth Diversity 7/20 (Marginal)
Pool Quality
Pool Extent = meters 		3/20 (Poor)
Riffle Quality 6/20 (Marginal)
Shading 45 %
Embeddedness 45 %


Stream Water Quality:
Water temperature 13.9 ° C
Dissolved oxygen (DO) 6.4 mg/L
pH (lab) 7.25
Conductivity 219 µmho/cm
Alkalinity
(acid neutralizing capacity) 		1156 µeq/L
Dissolved organic carbon (DOC) 3.5 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. 		Close-up of a mayfly indicator species.

Fish Survey Results:
The following 2 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 7
Eastern Mosquitofish 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Cricotopus/Orthocladius Midge 21
Orthocladiinae A Non-Biting Midges 21
Tvetenia Non-Biting Midges 14
Amphinemura Spring Stonefly 10
Isoperla Stripetail Stonefly 7
Conchapelopia Non-Biting Midges 7
Diamesa Bloodworm 6
Prostoia Spring Stonefly 5
Caecidotea Isopod 4
Crangonyx Amphipod 4
Thienemanniella Non-Biting Midges 3
Polypedilum Non-Biting Midges 2
Prosimulium Black Fly 1
Stegopterna Black Fly 1
Rhyacophila Free-Living Caddisfly 1
Girardia Freshwater Flatworm 1
Kick net sampling for macroinvertebrates.
Sampling with a kick net.

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.