MBSS Site Summary for: MO-P-016-227-97


Located on BROAD RUN in the Potomac River MO Cnty watershed, 8-digit code: 02140202.
This stream was visited in the spring on 3/19/1997 and again in the summer on 6/19/1997.

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 Fair - 3.3 / 5.0
Benthic IBI Poor - 1.8 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 1,396 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 1.3 %
Agricultural Land Use 75 %
Forested Land Use 22.3 %


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

Physical Stream Habitat
Instream Habitat 13/20 (Suboptimal)
Epifaunal Substrate 11/20 (Suboptimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = meters 		10/20 (Marginal)
Riffle Quality 6/20 (Marginal)
Shading 85 %
Embeddedness 40 %


Stream Water Quality:
Water temperature 18.9 ° C
Dissolved oxygen (DO) 8 mg/L
pH (lab) 7.15
Conductivity 148 µmho/cm
Alkalinity
(acid neutralizing capacity) 		515.6 µeq/L
Dissolved organic carbon (DOC) 6.1 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 10 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 122
Green Sunfish 110
Potomac Sculpin 14
Pumpkinseed 14
Creek Chub 10
Fantail Darter 10
Bluegill 8
Golden Shiner 8
Yellow Bullhead 4
Rosyside Dace 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Eastern American Toad
Eastern Box Turtle
Northern Green Frog
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
Amphinemura Spring Stonefly 27
Orthocladiinae A Non-Biting Midges 26
Naididae Aquatic Worm 12
Clinocera Aquatic Dance Fly 8
Parametriocnemus Non-Biting Midges 5
Polypedilum Non-Biting Midges 5
Eukiefferiella Non-Biting Midges 5
Conchapelopia Non-Biting Midges 2
Cheumatopsyche Net-Spinning Caddisfly 2
Bezzia Biting Midge 2
Prosimulium Black Fly 2
Acerpenna Tiny Blue-Winged Olive Mayflies 2
Prostoia Spring Stonefly 1
Diamesa Bloodworm 1
Baetis Blue-Winged Olive Mayfly 1
Neophylax Caddisfly 1
Stenonema Flatheaded Mayfly 1
Crangonyx Amphipod 1
Anchytarsus Beetle 1
Hydropsyche Net-Spinning Caddisfly 1
Oulimnius Riffle 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.