MBSS Site Summary for: MO-P-308-117-97


Located on MILL CR UT1 in the Rock Creek watershed, 8-digit code: 02140206.
This stream was visited in the spring on 3/7/1997 and again in the summer on 6/2/1997.

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 Poor - 1.3 / 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 377 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 48.7 %
Agricultural Land Use 26.8 %
Forested Land Use 24.1 %


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

Physical Stream Habitat
Instream Habitat 14/20 (Suboptimal)
Epifaunal Substrate 16/20 (Optimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = meters 		7/20 (Marginal)
Riffle Quality 11/20 (Suboptimal)
Shading 95 %
Embeddedness 25 %


Stream Water Quality:
Water temperature 18.1 ° C
Dissolved oxygen (DO) 8.6 mg/L
pH (lab) 7.3
Conductivity 161 µmho/cm
Alkalinity
(acid neutralizing capacity) 		797.4 µeq/L
Dissolved organic carbon (DOC) 1.7 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 4 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 102
Longnose Dace 12
Green Sunfish 8
Creek Chub 7
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander

Crayfish:
Cambarus bartonii bartonii
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 91
Cricotopus/Orthocladius Midge 10
Conchapelopia Non-Biting Midges 6
Polypedilum Non-Biting Midges 4
Orthocladiinae A Non-Biting Midges 3
Zavrelimyia Non-Biting Midges 2
Diplectrona Net-Spinning Caddisfly 2
Brillia Non-Biting Midges 2
Tipula Crane Fly 1
Girardia Freshwater Flatworm 1
Parametriocnemus Non-Biting Midges 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.