MBSS Site Summary for: CORS-102-S-2023

Site Photos

Field photo showing stream conditions at site CORS-102-S-2023-MidpointLookingDownstream (Opens in a new window) Field photo showing stream conditions at site CORS-102-S-2023-MidpointLookingUpstream (Opens in a new window)

Located on UT EMORY CREEK in the Corsica River watershed, 8-digit code: 02130507.
This stream was visited in the spring on 3/1/2023 and again in the summer on 6/6/2023.

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 - 1.3 / 5.0
Benthic IBI Poor - 2.4 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area No data available A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 4.6 %
Agricultural Land Use 14.1 %
Forested Land Use 81 %


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

Physical Stream Habitat
Instream Habitat 6/20 (Marginal)
Epifaunal Substrate 5/20 (Poor)
Velocity/Depth Diversity 4/20 (Poor)
Pool Quality
Pool Extent = 70 meters 		7/20 (Marginal)
Riffle Quality
Riffle Extent = 5 meters 		2/20 (Poor)
Shading 50 %
Embeddedness 35 %
Several measures of instream habitat were considered 'Poor' at this location.


Stream Water Quality:
Water temperature 15.8 ° C
Dissolved oxygen (DO) 2.47 mg/L
Dissolved oxygen levels measured in the stream were very low (2.47 mg/L). Many fishes and other aquatic animals cannot tolerate low levels of oxygen in the water.
pH (lab) 6.86
Alkalinity
(acid neutralizing capacity) 		306.3 µeq/L
Dissolved organic carbon (DOC) 14.24 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 21
Bluegill 4
American Eel 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Northern Green Frog
Pickerel Frog
Southern Leopard Frog

Crayfish:
Procambarus clarkii

Exotic Plants:
Multiflora Rose
Wineberry
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
PROSIMULIUM Black Fly 75
ORTHOCLADIUS Non-Biting Midges 9
PARAMETRIOCNEMUS Non-Biting Midges 7
STEGOPTERNA Black Fly 7
EUKIEFFERIELLA Non-Biting Midges 6
HYDROBAENUS Midge 4
ORTHOCLADIINAE Midge 1
PARANEMOURA 1
STENELMIS Beetle 1
TIPULA Crane Fly 1
TIPULIDAE Cranefly 1
RHEOCRICOTOPUS Non-Biting Midges 1
LIMNEPHILIDAE Northern Casemaker Caddisfly 1
ALLOCAPNIA Small Winter Stonefly 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.