MBSS Site Summary for: CH-S-327-221-95


Located on OLD WOMANS RUN in the Mattawoman Creek watershed, 8-digit code: 02140111.
This stream was visited in the spring on 3/10/1995 and again in the summer on 6/21/1995.

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 - 4.7 / 5.0
Benthic IBI Good - 4.4 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 2,751 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 8.8 %
Agricultural Land Use 13.7 %
Forested Land Use 77.5 %


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

Physical Stream Habitat
Instream Habitat 15/20 (Suboptimal)
Epifaunal Substrate 13/20 (Suboptimal)
Velocity/Depth Diversity 14/20 (Suboptimal)
Pool Quality
Pool Extent = meters 		16/20 (Optimal)
Riffle Quality 16/20 (Optimal)
Shading 75 %
Embeddedness 25 %


Stream Water Quality:
Water temperature 21.5 ° C
Dissolved oxygen (DO) 6.1 mg/L
pH (lab) 5.9
Conductivity 112 µmho/cm
Alkalinity
(acid neutralizing capacity) 		49.2 µeq/L
Dissolved organic carbon (DOC) 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 13 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 119
Rosyside Dace 50
Tessellated Darter 38
American Eel 24
Creek Chub 14
Pirate Perch 13
Creek Chubsucker 12
White Sucker 9
Least Brook Lamprey 6
Pumpkinseed 6
Bluegill 2
Sea Lamprey 2
Fallfish 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Northern Two-Lined Salamander
Southern Leopard Frog

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Prosimulium Black Fly 42
Neophylax Caddisfly 7
Parametriocnemus Non-Biting Midges 7
Strophopteryx Early Brown Stonefly 5
Cheumatopsyche Net-Spinning Caddisfly 4
Oemopteryx Stonefly 4
Eccoptura Yellow Stone Stonefly 3
Limnephilidae Northern Casemaker Caddisfly 3
Tanytarsus Non-Biting Midges 2
Trissopelopia Non-Biting Midges 2
Ephemerella Sulphur Mayfly 2
Orthocladius Non-Biting Midges 2
Amphinemura Spring Stonefly 2
Zavrelimyia Non-Biting Midges 1
Leptophlebia Pronggilled Mayfly 1
Limonia 1
Macromia 1
Leuctra  Rolled-Winged Stonefly 1
Brillia Non-Biting Midges 1
Cricotopus Non-Biting Midges 1
Diplocladius Non-Biting Midges 1
Eukiefferiella Non-Biting Midges 1
Stenonema Flatheaded Mayfly 1
Chloroperlidae Green Stonefly 1
Unionidae Mussel 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.