MBSS Site Summary for: MO-P-304-127-97


Located on NORTHWEST BR UT1 in the Anacostia River watershed, 8-digit code: 02140205.
This stream was visited in the spring on 3/6/1997 and again in the summer on 6/3/1997.

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 Poor - 1.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 249 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 64.3 %
Agricultural Land Use 9.2 %
Forested Land Use 26.7 %


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 10/20 (Marginal)
Pool Quality
Pool Extent = meters 		13/20 (Suboptimal)
Riffle Quality 9/20 (Marginal)
Shading 55 %
Embeddedness 30 %


Stream Water Quality:
Water temperature 14 ° C
Dissolved oxygen (DO) 9.9 mg/L
pH (lab) 7.22
Conductivity 119 µmho/cm
Alkalinity
(acid neutralizing capacity) 		852.1 µeq/L
Dissolved organic carbon (DOC) 1.9 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:
The following 4 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 43
Creek Chub 15
Rosyside Dace 14
White Sucker 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Cricotopus/Orthocladius Midge 41
Diamesa Bloodworm 14
Diplocladius Non-Biting Midges 11
Orthocladiinae A Non-Biting Midges 5
Antocha Crane Fly 5
Corynoneura Non-Biting Midges 3
Parametriocnemus Non-Biting Midges 3
Simulium Black Fly 2
Limnodrilus Worm 2
Diplectrona Net-Spinning Caddisfly 2
Eurylophella Mayfly 1
Polypedilum Non-Biting Midges 1
Rheocricotopus Non-Biting Midges 1
Rheotanytarsus Non-Biting Midges 1
Tanytarsus Non-Biting Midges 1
Thienemanniella Non-Biting Midges 1
Thienemannimyia Non-Biting Midges 1
Amphipoda Scud 1
Hemerodromia Tiny Fly 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.