MBSS Site Summary for: PRLN-104-R-2007

Site Photos

Field photo showing stream conditions at site PRLN-104-R-2007-1 (Opens in a new window) Field photo showing stream conditions at site PRLN-104-R-2007-2 (Opens in a new window)

Located on North Branch Potomac River UT6 in the Potomac River L N Branch watershed, 8-digit code: 02141001.
This stream was visited in the spring on 4/5/2007 and again in the summer on 6/18/2007.

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 N R
Benthic IBI Fair - 3.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 47 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 11.4 %
Forested Land Use 88.6 %


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

Physical Stream Habitat
Instream Habitat not sampled
Epifaunal Substrate not sampled
Velocity/Depth Diversity not sampled
Pool Quality not sampled
Riffle Quality not sampled
Shading not sampled
Embeddedness not sampled


Stream Water Quality:
pH (lab) 6.86
Conductivity 0 µmho/cm
Alkalinity
(acid neutralizing capacity) 		133.4 µeq/L
Dissolved organic carbon (DOC) 1.4672 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
Long-Tailed Salamander
Northern Dusky Salamander
Seal Salamander

Crayfish:
Cambaridae

Exotic Plants:
Garlic Mustard
Japanese Stiltgrass
Multiflora Rose
Tree Of Heaven
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Leuctra  Rolled-Winged Stonefly 36
Ameletus Combmouthed Minnow Mayfly 26
Isoperla Stripetail Stonefly 18
Caecidotea Isopod 16
Isotomurus Elongate-Bodied Springtail 6
Ephemerella Sulphur Mayfly 5
Amphinemura Spring Stonefly 5
Tanypodinae Non-Biting Midges 2
Sweltsa Stonefly 2
Lumbriculidae Worm 1
Perlodidae Perlodid Stonefly 1
Peltoperlidae Roachlike Stonefly 1
Ostrocerca Stonefly 1
Heleniella European Non-Biting Midge 1
Wormaldia Fingernet Caddisfly 1
Heptageniidae Flathead Mayfly 1
Rhyacophila Free-Living Caddisfly 1
Orthocladiinae Midge 1
Neophylax Caddisfly 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.