MBSS Site Summary for: MO-P-407-225-97


Located on NORTHWEST BR UT2 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 6/26/1997.

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 - 4.3 / 5.0
Benthic IBI Poor - 2.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 2,198 acres Cows standing in a stream at a site with high agricultural land use. Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
Urban Land Use 8.2 %
Agricultural Land Use 49.6 %
Forested Land Use 41.6 %


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 9/20 (Marginal)
Velocity/Depth Diversity 12/20 (Suboptimal)
Pool Quality
Pool Extent = meters 		14/20 (Suboptimal)
Riffle Quality 12/20 (Suboptimal)
Shading 25 %
Embeddedness 40 %


Stream Water Quality:
Water temperature 22.3 ° C
Dissolved oxygen (DO) 6.8 mg/L
pH (lab) 7.31
Conductivity 219 µmho/cm
Alkalinity
(acid neutralizing capacity) 		845.4 µeq/L
Dissolved organic carbon (DOC) 3.4 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 19 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 188
Fantail Darter 166
Rosyside Dace 90
Bluntnose Minnow 73
White Sucker 68
Swallowtail Shiner 51
Common Shiner 46
Tessellated Darter 30
Redbreast Sunfish 29
Creek Chub 18
Bluegill 15
Longnose Dace 14
Spottail Shiner 13
Cutlip Minnow 10
Green Sunfish 3
American Eel 2
Golden Shiner 1
Northern Hogsucker 1
Silverjaw Minnow 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
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 28
Orthocladiinae A Non-Biting Midges 18
Prostoia Spring Stonefly 6
Optioservus Riffle Beetle 2
Parametriocnemus Non-Biting Midges 2
Corynoneura Non-Biting Midges 2
Antocha Crane Fly 2
Naididae Aquatic Worm 2
Tubificidae Aquatic Worm 1
Prosimulium Black Fly 1
Simulium Black Fly 1
Diamesa Bloodworm 1
Paraleptophlebia Blue Quill Mayfly 1
Clinocera Aquatic Dance Fly 1
Hydropsyche Net-Spinning Caddisfly 1
Eukiefferiella Non-Biting Midges 1
Micropsectra Non-Biting Midges 1
Natarsia Non-Biting Midges 1
Polypedilum Non-Biting Midges 1
Sympotthastia Non-Biting Midges 1
Thienemanniella Non-Biting Midges 1
Tribelos Non-Biting Midges 1
Limnephilidae Northern Casemaker Caddisfly 1
Ephemerella Sulphur 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.