MBSS Site Summary for: PRUN-210-R-2001

Site Photos

Field photo showing stream conditions at site PRUN-210-R-2001-1 (Opens in a new window) Field photo showing stream conditions at site PRUN-210-R-2001-2 (Opens in a new window)

Located on LOSTLAND RUN in the Potomac River U N Branch watershed, 8-digit code: 02141005.
This stream was visited in the spring on 4/2/2001 and again in the summer on 6/25/2001.

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 Good - 4.0 / 5.0
Benthic IBI Fair - 3.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 6,043 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 4 %
Agricultural Land Use 11 %
Forested Land Use 80 %


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

Physical Stream Habitat
Instream Habitat 17/20 (Optimal)
Epifaunal Substrate 18/20 (Optimal)
Velocity/Depth Diversity 16/20 (Optimal)
Pool Quality
Pool Extent = 25 meters 		16/20 (Optimal)
Riffle Quality
Riffle Extent = 70 meters 		18/20 (Optimal)
Shading 89 %
Embeddedness 15 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 13.5 ° C
Dissolved oxygen (DO) 12.7 mg/L
pH (lab) 7.22
Conductivity 170 µmho/cm
Alkalinity
(acid neutralizing capacity) 		186.5 µeq/L
Dissolved organic carbon (DOC) 0.9 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:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Amphinemura Spring Stonefly 37
Micropsectra Non-Biting Midges 23
Leuctra  Rolled-Winged Stonefly 11
Parametriocnemus Non-Biting Midges 10
Taeniopteryx Winter Stonefly 8
Sweltsa Stonefly 7
Epeorus Mayfly 5
Hydropsyche Net-Spinning Caddisfly 4
Paraphaenocladius Non-Biting Midges 3
Perlodidae Perlodid Stonefly 2
Lumbriculidae Worm 2
Baetis Blue-Winged Olive Mayfly 2
Hexatoma Crane Fly 2
Acroneuria Golden Stoneflies 1
Dicranota Hairy-Eyed Cranefly 1
Glossosoma Little Black Caddisfly 1
Ameletus Combmouthed Minnow 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.