MBSS Site Summary for: MO-P-056-319-97


Located on NORTHWEST BR ANACOSTIA R in the Anacostia River watershed, 8-digit code: 02140205.
This stream was visited in the spring on 3/24/1997 and again in the summer on 6/10/1997.

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 Good - 4.0 / 5.0
Benthic IBI Poor - 1.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 14,467 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 22.3 %
Agricultural Land Use 37.9 %
Forested Land Use 39 %


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 6/20 (Marginal)
Velocity/Depth Diversity 14/20 (Suboptimal)
Pool Quality
Pool Extent = meters 		18/20 (Optimal)
Riffle Quality 11/20 (Suboptimal)
Shading 50 %
Embeddedness 35 %


Stream Water Quality:
Water temperature 16.5 ° C
Dissolved oxygen (DO) 9.6 mg/L
pH (lab) 7.75
Conductivity 165 µmho/cm
Alkalinity
(acid neutralizing capacity) 		845.5 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 20 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Bluntnose Minnow 213
Spottail Shiner 126
Blacknose Dace 112
Swallowtail Shiner 52
Silverjaw Minnow 41
Creek Chub 36
Tessellated Darter 32
White Sucker 25
Rosyside Dace 24
Redbreast Sunfish 17
Bluegill 12
Longnose Dace 12
Cutlip Minnow 8
Northern Hogsucker 8
Brown Trout 3
Fantail Darter 3
Goldfish 2
Pumpkinseed 2
Common Shiner 1
Golden Shiner 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

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

Crayfish:
Orconectes virilis

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Naididae Aquatic Worm 61
Cricotopus/Orthocladius Midge 8
Chelifera Aquatic Dance Fly 4
Hemerodromia Tiny Fly 3
Polypedilum Non-Biting Midges 2
Oulimnius Riffle Beetle 2
Parametriocnemus Non-Biting Midges 1
Antocha Crane 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.