MBSS Site Summary for: PRUT-116-R-2001

Site Photos

Field photo showing stream conditions at site PRUT-116-R-2001-4 (Opens in a new window) Field photo showing stream conditions at site PRUT-116-R-2001-5 (Opens in a new window)

Located on POTOMAC RIVER UT13 in the Potomac River U tidal watershed, 8-digit code: 02140201.
This stream was visited in the spring on 3/15/2001 and again in the summer on 7/3/2001.

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 Poor - 1.0 / 5.0
Benthic IBI Fair - 3.9 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 84 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 4 %
Agricultural Land Use 19 %
Forested Land Use 76 %


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 17/20 (Optimal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 27 meters 		11/20 (Suboptimal)
Riffle Quality
Riffle Extent = 62 meters 		9/20 (Marginal)
Shading 87 %
Embeddedness 26 %


Stream Water Quality:
Water temperature 17 ° C
Dissolved oxygen (DO) 7.2 mg/L
pH (lab) 6.84
Conductivity 80 µmho/cm
Alkalinity
(acid neutralizing capacity) 		249.3 µeq/L
Dissolved organic carbon (DOC) 1.3 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
No Fish Observed 0
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Eastern Box Turtle
Northern Green Frog
Northern Two-Lined Salamander
Pickerel Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Amphinemura Spring Stonefly 34
Eukiefferiella Non-Biting Midges 16
Stegopterna Black Fly 10
Parametriocnemus Non-Biting Midges 8
Neophylax Caddisfly 7
Synurella Amphipod 5
Prosimulium Black Fly 5
Cricotopus/Orthocladius Midge 4
Isotomurus Elongate-Bodied Springtail 3
Lumbriculidae Worm 3
Leuctra  Rolled-Winged Stonefly 2
Tanytarsus Non-Biting Midges 2
Ameletus Combmouthed Minnow Mayfly 2
Tipula Crane Fly 1
Heterotrissocladius European Non-Biting Midge 1
Philopotamidae Fingernet Caddisfly 1
Caecidotea Isopod 1
Diplectrona Net-Spinning Caddisfly 1
Parachaetocladius Non-Biting Midge 1
Polypedilum Non-Biting Midges 1
Rheocricotopus Non-Biting Midges 1
Perlodidae Perlodid Stonefly 1
Prostoia Spring Stonefly 1
Polycentropus Tube Maker 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.