MBSS Site Summary for: PRUN-201-X-2014

Site Photos

Field photo showing stream conditions at site PRUN-201-X-2014-MidpointDownstream (Opens in a new window) Field photo showing stream conditions at site PRUN-201-X-2014-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 4/14/2014 and again in the summer on 7/23/2014.

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 Good - 4.8 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area No data available 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 No data available
Agricultural Land Use No data available
Forested Land Use No data available


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 18/20 (Optimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = 44 meters 		10/20 (Marginal)
Riffle Quality
Riffle Extent = 33 meters 		13/20 (Suboptimal)
Shading 65 %
Embeddedness 15 %


Stream Water Quality:
pH (lab) 6.77
Alkalinity
(acid neutralizing capacity) 		58.2 µeq/L
Dissolved organic carbon (DOC) 1.0847 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:
Eastern American Toad
Northern Two-Lined Salamander

Crayfish:
Cambarus
Cambarus bartonii bartonii

Exotic Plants:
Garlic Mustard
Japanese Knotweed
Japanese Stiltgrass
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Diplectrona Net-Spinning Caddisfly 36
Sweltsa Stonefly 8
Epeorus Mayfly 7
Dolophilodes Medium Evening Sedge Caddisfly 7
Neophylax Caddisfly 6
Leptophlebiidae Pronggilled Mayfly 6
Micropsectra Non-Biting Midges 5
Hydropsyche Net-Spinning Caddisfly 4
Amphinemura Spring Stonefly 4
Isoperla Stripetail Stonefly 3
Maccaffertium March Brown And Cahill Mayfly 3
Leuctra  Rolled-Winged Stonefly 2
Tipula Crane Fly 2
Rhyacophila Free-Living Caddisfly 2
Chloroperlidae Green Stonefly 2
Microtendipes Non-Biting Midges 2
Ephemerella Sulphur Mayfly 2
Polycentropus Tube Maker Caddisfly 2
Chironomidae Non-Biting Midge 2
Oulimnius Riffle Beetle 1
Ephemerellidae Spiny Crawler Mayfly 1
Tanytarsini Non-Biting Midges 1
Perlodidae Perlodid Stonefly 1
Cheumatopsyche Net-Spinning Caddisfly 1
Leucrocuta Mayfly 1
Hexatoma Crane Fly 1
Malirekus 1
Peltoperla 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.