MBSS Site Summary for: PRMT-206-R-2004

Site Photos

Field photo showing stream conditions at site PRMT-206-R-2004-1 (Opens in a new window) Field photo showing stream conditions at site PRMT-206-R-2004-2 (Opens in a new window)

Located on REEDER RUN UT in the Potomac River M tidal watershed, 8-digit code: 02140102.
This stream was visited in the spring on 3/10/2004 and again in the summer on 7/14/2004.

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 - 4.7 / 5.0
Benthic IBI Fair - 3.9 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 1,413 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 10 %
Forested Land Use 89 %


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

Physical Stream Habitat
Instream Habitat 14/20 (Suboptimal)
Epifaunal Substrate 12/20 (Suboptimal)
Velocity/Depth Diversity 14/20 (Suboptimal)
Pool Quality
Pool Extent = 51 meters 		15/20 (Suboptimal)
Riffle Quality
Riffle Extent = 24 meters 		14/20 (Suboptimal)
Shading 90 %
Embeddedness 90 %
The embeddedness, a measure of silt on the stream bottom, was 90%. This is relatively high, and may exclude some biota.


Stream Water Quality:
Water temperature 25.1 ° C
Dissolved oxygen (DO) 5.6 mg/L
pH (lab) 6.86
Conductivity 66 µmho/cm
Alkalinity
(acid neutralizing capacity) 		283.2 µeq/L
Dissolved organic carbon (DOC) 4 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 13 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Redbreast Sunfish 32
Least Brook Lamprey 28
Tessellated Darter 25
Eastern Mudminnow 20
Margined Madtom 10
Pumpkinseed 8
Creek Chubsucker 6
American Eel 4
Golden Shiner 3
Creek Chub 2
Green Sunfish 2
Chain Pickerel 1
Yellow Bullhead 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Eastern Box Turtle
Eastern Cricket Frog
Eastern Fence Lizard
Northern Green Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Prosimulium Black Fly 97
Caecidotea Isopod 8
Stenonema Flatheaded Mayfly 7
Synurella Amphipod 5
Cheumatopsyche Net-Spinning Caddisfly 4
Thienemannimyia group Non-Biting Midges 4
Leptophlebiidae Pronggilled Mayfly 4
Hyalella Amphipod 2
Stegopterna Black Fly 2
Tipula Crane Fly 1
Triaenodes Long-Horned Caddisfly 1
Xylotopus Midge 1
Coenagrionidae Narrowwinged Damselfly 1
Dineutus Whirlygig Beetle 1
Ironoquia Northern Caddisfly 1
Ablabesmyia Non-Biting Midge 1
Parametriocnemus Non-Biting Midges 1
Tanytarsus 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.