MBSS Site Summary for: PRUN-202-X-2017

Site Photos

Field photo showing stream conditions at site PRUN-202-X-2017-MidpointDownstream (Opens in a new window) Field photo showing stream conditions at site PRUN-202-X-2017-MidpointUpstream (Opens in a new window)

Located on Wolfden Run in the Potomac River U N Branch watershed, 8-digit code: 02141005.
This stream was visited in the spring on 3/23/2017 and again in the summer on 8/16/2017.

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 - 4.0 / 5.0
Benthic IBI Poor - 2.8 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 3,340 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 2.4 %
Agricultural Land Use 7.6 %
Forested Land Use 86.2 %


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

Physical Stream Habitat
Instream Habitat 15/20 (Suboptimal)
Epifaunal Substrate 19/20 (Optimal)
Velocity/Depth Diversity 12/20 (Suboptimal)
Pool Quality
Pool Extent = 33 meters 		12/20 (Suboptimal)
Riffle Quality
Riffle Extent = 57 meters 		17/20 (Optimal)
Shading 90 %
Embeddedness 10 %


Stream Water Quality:
pH (lab) 6.84
Alkalinity
(acid neutralizing capacity) 		65.5 µeq/L
Dissolved organic carbon (DOC) 0.8676 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 1 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Brook Trout 16
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
Cambarus bartonii bartonii

Exotic Plants:
Autumn Olive
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
AMPHINEMURA Spring Stonefly 79
DIPLECTRONA Net-Spinning Caddisfly 10
LEUCTRA  Rolled-Winged Stonefly 8
PARAPHAENOCLADIUS Non-Biting Midges 7
PARAMETRIOCNEMUS Non-Biting Midges 6
SWELTSA Stonefly 5
PELTOPERLA 3
TAENIONEMA 3
LEPIDOSTOMA Little Brown Sedge Caddisfly 2
TIPULA Crane Fly 2
TALLAPERLA Roach-Like Stonefly 2
LEUCTRIDAE Rolledwinged Stonefly 1
POLYCENTROPUS Tube Maker Caddisfly 1
HETEROTRISSOCLADIUS European Non-Biting Midge 1
PHILOPOTAMIDAE Fingernet Caddisfly 1
WORMALDIA Fingernet Caddisfly 1
RHYACOPHILA Free-Living Caddisfly 1
CHLOROPERLIDAE Green Stonefly 1
DICRANOTA Hairy-Eyed Cranefly 1
PROBEZZIA Biting Midges 1
STEGOPTERNA Black Fly 1
PERLIDAE Common Stonefly 1
DOLOPHILODES Medium Evening Sedge Caddisfly 1
MOLOPHILUS 1
BRILLIA Non-Biting Midges 1
MICROPSECTRA 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.