MBSS Site Summary for: CORS-102-S-2004

Site Photos

Field photo showing stream conditions at site CORS-102-S-2004-1 (Opens in a new window) Field photo showing stream conditions at site CORS-102-S-2004-2 (Opens in a new window)

Located on EMORY CR UT 1 in the Corsica River watershed, 8-digit code: 02130507.
This stream was visited in the spring on 4/1/2004 and again in the summer on 6/16/2004.

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 Fair - 3.9 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 654 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 16.9 %
Forested Land Use 80.5 %


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

Physical Stream Habitat
Instream Habitat 8/20 (Marginal)
Epifaunal Substrate 9/20 (Marginal)
Velocity/Depth Diversity 8/20 (Marginal)
Pool Quality
Pool Extent = 68 meters 		11/20 (Suboptimal)
Riffle Quality
Riffle Extent = 7 meters 		6/20 (Marginal)
Shading 93 %
Embeddedness 20 %


Stream Water Quality:
Water temperature 21.8 ° C
Dissolved oxygen (DO) 5.7 mg/L
pH (lab) 6.02
Conductivity 126 µmho/cm
Alkalinity
(acid neutralizing capacity) 		84.5 µeq/L
Dissolved organic carbon (DOC) 16.5 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 2 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 33
Redfin Pickerel 8
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Fowler's Toad
Gray Treefrog
Northern Green Frog
Southern Leopard Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Prostoia Spring Stonefly 30
Synurella Amphipod 15
Orthocladius Non-Biting Midges 11
Nemouridae Nemourid Stonefly 9
Limnephilidae Northern Casemaker Caddisfly 7
Stegopterna Black Fly 6
Leptophlebia Pronggilled Mayfly 5
Thienemannimyia group Non-Biting Midges 5
Hydrobaenus Midge 3
Caecidotea Isopod 2
Parametriocnemus Non-Biting Midges 2
Prosimulium Black Fly 2
Crangonyctidae Scud 2
Acerpenna Tiny Blue-Winged Olive Mayflies 1
Hydrobius Water Scavenger Beetle 1
Lumbriculidae Worm 1
Tipula Crane Fly 1
Polypedilum 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.