MBSS Site Summary for: CORS-102-X-2006


Located on Three Bridges Branch UT2 in the Corsica River watershed, 8-digit code: 02130507.
This stream was visited in the spring on 4/4/2006 and again in the summer on 7/18/2006.

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 Fair - 3.9 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 1,070 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 2 %
Agricultural Land Use 69 %
Forested Land Use 28 %


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 6/20 (Marginal)
Pool Quality
Pool Extent = 62 meters 		9/20 (Marginal)
Riffle Quality
Riffle Extent = 13 meters 		11/20 (Suboptimal)
Shading 90 %
Embeddedness 40 %


Stream Water Quality:
Water temperature 23.4 ° C
Dissolved oxygen (DO) 5.7 mg/L
pH (lab) 7.57
Conductivity 230 µmho/cm
Alkalinity
(acid neutralizing capacity) 		1179.4 µeq/L
Dissolved organic carbon (DOC) 8.9232 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 8 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Tessellated Darter 244
Eastern Mudminnow 62
American Eel 27
Fallfish 15
Pumpkinseed 13
White Sucker 6
Creek Chubsucker 3
Pirate Perch 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Northern Green Frog
Northern Watersnake
Pickerel Frog

Crayfish:
Orconectes limosus
Procambarus clarkii

Exotic Plants:
Japanese Stiltgrass
Mile-A-Minute
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Orthocladius Non-Biting Midges 25
Tanytarsus Non-Biting Midges 13
Thienemannimyia group Non-Biting Midges 13
Polypedilum Non-Biting Midges 9
Parametriocnemus Non-Biting Midges 8
Rheocricotopus Non-Biting Midges 3
Orthocladiinae Midge 3
Ablabesmyia Non-Biting Midge 3
Gammarus Amphipod 3
Simulium Black Fly 2
Calopteryx Damselfly 2
Physa Air-Breathing Freshwater Snail 2
Tvetenia Non-Biting Midges 1
Zavrelimyia Non-Biting Midges 1
Leptophlebia Pronggilled Mayfly 1
Acerpenna Tiny Blue-Winged Olive Mayflies 1
Dineutus Whirlygig Beetle 1
Paratendipes European Non-Biting Midge 1
Clioperla Green-Winged Stonefly 1
Caecidotea Isopod 1
Eurylophella Mayfly 1
Stegopterna Black Fly 1
Stenelmis Beetle 1
Cryptochironomus Non-Biting Midges 1
Microtendipes Non-Biting Midges 1
Paraphaenocladius 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.