MBSS Site Summary for: PRUN-201-X-2015


Located on WOLFDEN RUN in the Potomac River U N Branch watershed, 8-digit code: 02141005.
This stream was visited in the spring on 4/7/2015 and again in the summer on 6/25/2015.

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 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 18/20 (Optimal)
Epifaunal Substrate 19/20 (Optimal)
Velocity/Depth Diversity 18/20 (Optimal)
Pool Quality
Pool Extent = 48 meters 		17/20 (Optimal)
Riffle Quality
Riffle Extent = 36 meters 		18/20 (Optimal)
Shading 70 %
Embeddedness 5 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
pH (lab) 6.69
Alkalinity
(acid neutralizing capacity) 		58.8 µeq/L
Dissolved organic carbon (DOC) 0.8834 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:
No amphibians and reptiles noted.

Crayfish:
Cambarus bartonii bartonii

Exotic Plants:
Garlic Mustard
Japanese Knotweed
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Amphinemura Spring Stonefly 18
Micropsectra Non-Biting Midges 17
Diplectrona Net-Spinning Caddisfly 17
Parachaetocladius Non-Biting Midge 16
Paraphaenocladius Non-Biting Midges 6
Rhyacophila Free-Living Caddisfly 5
Chloroperlidae Green Stonefly 5
Neophylax Caddisfly 4
Microtendipes Non-Biting Midges 4
Leuctra  Rolled-Winged Stonefly 3
Perlidae Common Stonefly 3
Hydropsyche Net-Spinning Caddisfly 2
Parasmittia 2
Ameletus Combmouthed Minnow Mayfly 2
Leuctridae Rolledwinged Stonefly 2
Sweltsa Stonefly 2
Isoperla Stripetail Stonefly 2
Polycentropus Tube Maker Caddisfly 1
Dolophilodes Medium Evening Sedge Caddisfly 1
Orthocladiinae Midge 1
Potthastia Non-Biting Midges 1
Perlodidae Perlodid Stonefly 1
Leptophlebiidae Pronggilled Mayfly 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.