MBSS Site Summary for: PRUN-202-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 Fair - 3.5 / 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 16/20 (Optimal)
Epifaunal Substrate 19/20 (Optimal)
Velocity/Depth Diversity 15/20 (Suboptimal)
Pool Quality
Pool Extent = 31 meters 		17/20 (Optimal)
Riffle Quality
Riffle Extent = 48 meters 		17/20 (Optimal)
Shading 65 %
Embeddedness 5 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
pH (lab) 5.22
Alkalinity
(acid neutralizing capacity) 		0.002607 µeq/L
Dissolved organic carbon (DOC) 0.8689 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:
Northern Two-Lined Salamander

Crayfish:
Cambarus
Cambarus bartonii bartonii

Exotic Plants:
Autumn Olive
Multiflora Rose
Shrub Honeysuckle
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Amphinemura Spring Stonefly 27
Leuctra  Rolled-Winged Stonefly 24
Empididae Dance Fly 11
Parametriocnemus Non-Biting Midges 8
Diplectrona Net-Spinning Caddisfly 6
Micropsectra Non-Biting Midges 6
Sweltsa Stonefly 6
Hydropsyche Net-Spinning Caddisfly 4
Rhyacophila Free-Living Caddisfly 4
Chloroperlidae Green Stonefly 4
Dolophilodes Medium Evening Sedge Caddisfly 3
Chaetocladius Non-Biting Midges 3
Hexatoma Crane Fly 2
Dicranota Hairy-Eyed Cranefly 2
Glossosoma Little Black Caddisfly 1
Lepidostoma Little Brown Sedge Caddisfly 1
Maccaffertium March Brown And Cahill Mayfly 1
Eurylophella Mayfly 1
Tipula Crane Fly 1
Nemouridae Nemourid Stonefly 1
Bezzia Biting Midge 1
Perlidae Common Stonefly 1
Molophilus 1
Peltoperla 1
Isoperla Stripetail Stonefly 1
Ephemerella Sulphur Mayfly 1
Chironomini Non-Biting Midge 1
Microtendipes Non-Biting Midges 1
Tanypodinae Non-Biting Midges 1
Tvetenia Non-Biting Midges 1
Oulimnius Riffle Beetle 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.