MBSS Site Summary for: MO-P-091-204-97


Located on MUDDY BR in the Potomac River MO Cnty watershed, 8-digit code: 02140202.
This stream was visited in the spring on 3/10/1997 and again in the summer on 6/4/1997.

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 - 1.8 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 4,266 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 38.3 %
Agricultural Land Use 42.1 %
Forested Land Use 18.2 %


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

Physical Stream Habitat
Instream Habitat 17/20 (Optimal)
Epifaunal Substrate 13/20 (Suboptimal)
Velocity/Depth Diversity 14/20 (Suboptimal)
Pool Quality
Pool Extent = meters 		16/20 (Optimal)
Riffle Quality 12/20 (Suboptimal)
Shading 55 %
Embeddedness 40 %


Stream Water Quality:
Water temperature 17 ° C
Dissolved oxygen (DO) 8.9 mg/L
pH (lab) 7.47
Conductivity 250 µmho/cm
Alkalinity
(acid neutralizing capacity) 		976.5 µeq/L
Dissolved organic carbon (DOC) 2.6 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 15 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 165
Bluntnose Minnow 128
Silverjaw Minnow 61
Central Stoneroller 52
White Sucker 47
Longnose Dace 25
Fantail Darter 22
Creek Chub 17
Green Sunfish 10
Rosyside Dace 6
Bluegill 3
Yellow Bullhead 3
Pumpkinseed 2
Greenside Darter 1
Redbreast Sunfish 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander
Northern Watersnake

Crayfish:
Orconectes virilis

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Cricotopus/Orthocladius Midge 25
Diamesa Bloodworm 21
Naididae Aquatic Worm 8
Parametriocnemus Non-Biting Midges 8
Cheumatopsyche Net-Spinning Caddisfly 7
Stenelmis Beetle 4
Simulium Black Fly 2
Tubificidae Aquatic Worm 2
Calopteryx Damselfly 2
Paratanytarsus Non-Biting Midges 2
Polypedilum Non-Biting Midges 2
Conchapelopia Non-Biting Midges 2
Thienemanniella Non-Biting Midges 1
Boyeria Spotted Darner Dragonfly 1
Lumbriculidae Worm 1
Dolichopodidae Long-Legged Fly 1
Brillia Non-Biting Midges 1
Crangonyx Amphipod 1
Chelifera Aquatic Dance Fly 1
Antocha Crane Fly 1
Tipula 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.