MBSS Site Summary for: CORS-102-S-2003

Site Photos

Field photo showing stream conditions at site CORS-102-S-2003-1012 (Opens in a new window) Field photo showing stream conditions at site CORS-102-S-2003-1013 (Opens in a new window)

Located on EMORY CR UT1 in the Corsica River watershed, 8-digit code: 02130507.
This stream was visited in the spring on 4/3/2003 and again in the summer on 7/7/2003.

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 - 3.3 / 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 14/20 (Suboptimal)
Epifaunal Substrate 12/20 (Suboptimal)
Velocity/Depth Diversity 16/20 (Optimal)
Pool Quality
Pool Extent = 51 meters 		16/20 (Optimal)
Riffle Quality
Riffle Extent = 43 meters 		16/20 (Optimal)
Shading 95 %
Embeddedness 20 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 22.6 ° C
Dissolved oxygen (DO) 7.3 mg/L
pH (lab) 6.44
Conductivity 53 µmho/cm
Alkalinity
(acid neutralizing capacity) 		115.2 µeq/L
Dissolved organic carbon (DOC) 14.2 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
Eastern Mudminnow 23
Redfin Pickerel 3
American Eel 1
Golden Shiner 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Northern Green Frog
Wood 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
Stegopterna Black Fly 59
Prosimulium Black Fly 17
Ostrocerca Stonefly 13
Nemouridae Nemourid Stonefly 5
Orthocladius Non-Biting Midges 4
Hydrobaenus Midge 4
Prostoia Spring Stonefly 3
Zavrelimyia Non-Biting Midges 3
Synurella Amphipod 3
Enchytraeidae Aquatic Worm 2
Tubificidae Aquatic Worm 2
Pisidium Freshwater Pea (Pill) Clam 2
Orthocladiinae Midge 2
Hydroporus Water Beetle 1
Caecidotea Isopod 1
Scirtidae Marsh Beetle 1
Stygobromus Amphipod 1
Leptophlebia Pronggilled Mayfly 1
Leptophlebiidae Pronggilled Mayfly 1
Chironomidae Non-Biting Midge 1
Procladius Non-Biting Midge 1
Diplocladius 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.