MBSS Site Summary for: WA-V-003-123-95


Located on ST JAMES RUN UT1 in the Marsh Run watershed, 8-digit code: 02140503.
This stream was visited in the spring on 3/2/1995 and again in the summer on 7/14/1995.

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 - 1.7 / 5.0
Benthic IBI Poor - 1.5 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 226 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 %
Agricultural Land Use 88.8 %
Forested Land Use 11.1 %


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

Physical Stream Habitat
Instream Habitat 1/20 (Poor)
Epifaunal Substrate 0/20 (Poor)
Velocity/Depth Diversity 2/20 (Poor)
Pool Quality
Pool Extent = meters 		16/20 (Optimal)
Riffle Quality 0/20 (Poor)
Shading 10 %
Embeddedness 0 %
Several measures of instream habitat were considered 'Poor' at this location.


Stream Water Quality:
Water temperature 16.5 ° C
Dissolved oxygen (DO) 8.5 mg/L
pH (lab) 7.14
Conductivity 580 µmho/cm
Alkalinity
(acid neutralizing capacity) 		5815 µeq/L
Dissolved organic carbon (DOC) 2 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:
Fish data is unavailable or no fish observed.

Amphibians and Reptiles:
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Gammarus Amphipod 82
Rheocricotopus Non-Biting Midges 6
Culicoides 5
Hexatoma Crane Fly 2
Caecidotea Isopod 1
Orthocladius Non-Biting Midges 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.