MBSS Site Summary for: PRUT-101-B-2007

Site Photos

Field photo showing stream conditions at site PRUT-101-B-2007-1 (Opens in a new window) Field photo showing stream conditions at site PRUT-101-B-2007-2 (Opens in a new window)

Located on Henson Creek UT2 in the Potomac River U tidal watershed, 8-digit code: 02140201.
This stream was visited in the spring on 4/9/2007 and again in the summer on 6/14/2007.

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 Poor - 1.7 / 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 285 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 25.3 %
Agricultural Land Use 16 %
Forested Land Use 57.4 %


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

Physical Stream Habitat
Instream Habitat 12/20 (Suboptimal)
Epifaunal Substrate 14/20 (Suboptimal)
Velocity/Depth Diversity 8/20 (Marginal)
Pool Quality
Pool Extent = 43 meters 		7/20 (Marginal)
Riffle Quality
Riffle Extent = 45 meters 		12/20 (Suboptimal)
Shading 80 %
Embeddedness 30 %


Stream Water Quality:
Water temperature 16.8 ° C
Dissolved oxygen (DO) 9.3 mg/L
pH (lab) 7.07
Conductivity 210 µmho/cm
Alkalinity
(acid neutralizing capacity) 		382.6 µeq/L
Dissolved organic carbon (DOC) 1.1401 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 370
Creek Chub 17
American Eel 4
White Sucker 4
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Dusky Salamander
Northern Two-Lined Salamander

Crayfish:
Cambaridae
Cambarus bartonii bartonii

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Amphinemura Spring Stonefly 44
Eukiefferiella Non-Biting Midges 13
Cheumatopsyche Net-Spinning Caddisfly 12
Thienemannimyia group Non-Biting Midges 7
Diplectrona Net-Spinning Caddisfly 6
Diamesa Bloodworm 4
Pseudolimnophila Crane Fly 4
Optioservus Riffle Beetle 4
Oulimnius Riffle Beetle 4
Orthocladius Non-Biting Midges 3
Polypedilum Non-Biting Midges 3
Tipula Crane Fly 3
Parametriocnemus Non-Biting Midges 2
Pseudorthocladius Non-Biting Midges 1
Hemerodromia Tiny Fly 1
Calopteryx Damselfly 1
Chloroperlidae Green Stonefly 1
Antocha Crane Fly 1
Stenelmis 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.