MBSS Site Summary for: CH-S-217-201-95


Located on REEDER RUN in the Potomac River M tidal watershed, 8-digit code: 02140102.
This stream was visited in the spring on 3/7/1995 and again in the summer on 6/1/1995.

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 Good - 5.0 / 5.0
Benthic IBI Poor - 2.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 3,268 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 1.6 %
Agricultural Land Use 6.8 %
Forested Land Use 89.8 %


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

Physical Stream Habitat
Instream Habitat 16/20 (Optimal)
Epifaunal Substrate 14/20 (Suboptimal)
Velocity/Depth Diversity 15/20 (Suboptimal)
Pool Quality
Pool Extent = meters 		17/20 (Optimal)
Riffle Quality 16/20 (Optimal)
Shading 89 %
Embeddedness 35 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 20 ° C
Dissolved oxygen (DO) 7.4 mg/L
pH (lab) 6.69
Conductivity 88 µmho/cm
Alkalinity
(acid neutralizing capacity) 		322.4 µeq/L
Dissolved organic carbon (DOC) 6 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 16 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Bluegill 59
Least Brook Lamprey 59
Redbreast Sunfish 46
Pumpkinseed 33
American Eel 24
Fallfish 22
Spottail Shiner 17
Tessellated Darter 17
Creek Chubsucker 16
Brown Bullhead 10
Margined Madtom 8
Sea Lamprey 4
White Sucker 4
Eastern Mudminnow 2
Chain Pickerel 1
Golden Shiner 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Eastern Box Turtle
Pickerel Frog

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Paraleptophlebia Blue Quill Mayfly 2
Tipula Crane Fly 2
Peltodytes Crawling Water Beetle 1
Microvelia Small Water Strider Beetle 1
Chlaenius 1
Haliplus 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.