MBSS Site Summary for: MO-P-316-205-97


Located on MILL CR in the Rock Creek watershed, 8-digit code: 02140206.
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 Poor - 1.7 / 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 1,097 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 49.2 %
Agricultural Land Use 25.1 %
Forested Land Use 25.3 %


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 14/20 (Suboptimal)
Velocity/Depth Diversity 12/20 (Suboptimal)
Pool Quality
Pool Extent = meters 		13/20 (Suboptimal)
Riffle Quality 9/20 (Marginal)
Shading 65 %
Embeddedness 20 %


Stream Water Quality:
Water temperature 13.1 ° C
Dissolved oxygen (DO) 8.3 mg/L
pH (lab) 7.48
Conductivity 156 µmho/cm
Alkalinity
(acid neutralizing capacity) 		1447 µeq/L
Dissolved organic carbon (DOC) 2.4 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 6 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 76
Creek Chub 39
Green Sunfish 7
Longnose Dace 6
Rosyside Dace 4
White Sucker 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog
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
Naididae Aquatic Worm 23
Cricotopus/Orthocladius Midge 13
Lumbriculidae Worm 7
Stenelmis Beetle 6
Diamesa Bloodworm 5
Orthocladiinae A Non-Biting Midges 5
Rheotanytarsus Non-Biting Midges 3
Conchapelopia Non-Biting Midges 3
Eukiefferiella Non-Biting Midges 3
Paratanytarsus Non-Biting Midges 2
Rheocricotopus Non-Biting Midges 2
Tanytarsus Non-Biting Midges 2
Zavrelimyia Non-Biting Midges 2
Collembola Springtail 1
Sympotthastia Non-Biting Midges 1
Enchytraeidae Aquatic Worm 1
Dicrotendipes Non-Biting Midges 1
Tipula Crane Fly 1
Stenochironomus European Non-Biting Midge 1
Ceratopogon Biting Midge 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.