MBSS Site Summary for: PRUT-114-R-2001

Site Photos

Field photo showing stream conditions at site PRUT-114-R-2001-1 (Opens in a new window) Field photo showing stream conditions at site PRUT-114-R-2001-126 (Opens in a new window) Field photo showing stream conditions at site PRUT-114-R-2001-2 (Opens in a new window)

Located on HENSON CREEK UT3 in the Potomac River U tidal watershed, 8-digit code: 02140201.
This stream was visited in the spring on 3/19/2001 and again in the summer on 7/9/2001.

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 - 2.3 / 5.0
Benthic IBI Poor - 2.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 359 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 23 %
Agricultural Land Use 21 %
Forested Land Use 55 %


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 13/20 (Suboptimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = 35 meters 		10/20 (Marginal)
Riffle Quality
Riffle Extent = 45 meters 		12/20 (Suboptimal)
Shading 95 %
Embeddedness 20 %


Stream Water Quality:
Water temperature 22.1 ° C
Dissolved oxygen (DO) 8.8 mg/L
pH (lab) 7.58
Conductivity 260 µmho/cm
Alkalinity
(acid neutralizing capacity) 		768.4 µeq/L
Dissolved organic carbon (DOC) 1.5 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 4 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 72
Creek Chub 44
American Eel 4
Creek Chubsucker 2
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander
Northern Watersnake

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Cricotopus/Orthocladius Midge 19
Rheosmittia Non-Biting Midges 14
Conchapelopia Non-Biting Midges 12
Stegopterna Black Fly 6
Physa Air-Breathing Freshwater Snail 4
Gammarus Amphipod 3
Clinocera Aquatic Dance Fly 3
Cheumatopsyche Net-Spinning Caddisfly 3
Brillia Non-Biting Midges 3
Optioservus Riffle Beetle 3
Tubificidae Aquatic Worm 3
Zavrelimyia Non-Biting Midges 2
Orthocladiinae Midge 2
Lype Net Tube Caddisfly 2
Phaenopsectra Non-Biting Midges 2
Diamesa Bloodworm 2
Lanthus Clubtail Dragonfly 2
Tipula Crane Fly 1
Naididae Aquatic Worm 1
Polypedilum Non-Biting Midges 1
Orthocladiinae A Non-Biting Midges 1
Pisidiidae Pill Clam 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.