MBSS Site Summary for: CORS-102-S-2016


Located on Emory Creek UT in the Corsica River watershed, 8-digit code: 02130507.
This stream was visited in the spring on 3/14/2016 and again in the summer on 8/18/2016.

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 - 2.0 / 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 639 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 3.9 %
Agricultural Land Use 11.1 %
Forested Land Use 84 %


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

Physical Stream Habitat
Instream Habitat 10/20 (Marginal)
Epifaunal Substrate 6/20 (Marginal)
Velocity/Depth Diversity 6/20 (Marginal)
Pool Quality
Pool Extent = 67 meters 		11/20 (Suboptimal)
Riffle Quality
Riffle Extent = 8 meters 		7/20 (Marginal)
Shading 95 %
Embeddedness 40 %


Stream Water Quality:
pH (lab) 6.22
Alkalinity
(acid neutralizing capacity) 		136.1 µeq/L
Dissolved organic carbon (DOC) 22.656 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 3 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 266
Redfin Pickerel 5
Eastern Mosquitofish 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Northern Green Frog
Northern Spring Peeper
Southern Leopard Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
Wineberry
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Prosimulium Black Fly 40
Stegopterna Black Fly 21
Capniidae Small Winter Stonefly 17
Nemouridae Nemourid Stonefly 9
Limnephilidae Northern Casemaker Caddisfly 6
Ostrocerca Stonefly 3
Eukiefferiella Non-Biting Midges 3
Tubificidae Aquatic Worm 3
Pseudolimnophila Crane Fly 3
Hydrobaenus Midge 2
Ceratopogonidae Biting Midge 2
Lype Net Tube Caddisfly 1
Micropsectra Non-Biting Midges 1
Parametriocnemus Non-Biting Midges 1
Paraphaenocladius Non-Biting Midges 1
Pseudorthocladius Non-Biting Midges 1
Leptophlebiidae Pronggilled Mayfly 1
Crangonyx Amphipod 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.