MBSS Site Summary for: CORS-250-H-2010

Site Photos

Field photo showing stream conditions at site CORS-250-H-2010-1 (Opens in a new window) Field photo showing stream conditions at site CORS-250-H-2010-2 (Opens in a new window)

Located on Three Bridges Branch in the Corsica River watershed, 8-digit code: 02130507.
This stream was visited in the spring on 3/25/2010.

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 N R
Benthic IBI Good - 4.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 4,895 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 1.6 %
Agricultural Land Use 71.1 %
Forested Land Use 25.8 %


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

Physical Stream Habitat
Instream Habitat not sampled
Epifaunal Substrate not sampled
Velocity/Depth Diversity not sampled
Pool Quality not sampled
Riffle Quality not sampled
Shading not sampled
Embeddedness not sampled


Stream Water Quality:
pH (lab) 7.42
Alkalinity
(acid neutralizing capacity) 		871.1 µeq/L
Dissolved organic carbon (DOC) 6.1423 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:
Fish data is unavailable or no fish observed.

Amphibians and Reptiles:
American Bullfrog

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Orthocladius Non-Biting Midges 28
Acerpenna Tiny Blue-Winged Olive Mayflies 11
Thienemannimyia Group Non-Biting Midges 10
Polypedilum Non-Biting Midges 6
Rheocricotopus Non-Biting Midges 6
Tanytarsus Non-Biting Midges 4
Musculium Fingernail Clam 4
Maccaffertium March Brown And Cahill Mayfly 4
Orthocladiinae Midge 3
Cheumatopsyche Net-Spinning Caddisfly 3
Prosimulium Black Fly 3
Corynoneura Non-Biting Midges 2
Micropsectra Non-Biting Midges 2
Calopteryx Damselfly 2
Nanocladius Non-Biting Midges 2
Thienemanniella Non-Biting Midges 2
Stempellinella Non-Biting Midges 2
Parametriocnemus Non-Biting Midges 2
Tvetenia Non-Biting Midges 2
Leptophlebiidae Pronggilled Mayfly 2
Ephemerella Sulphur Mayfly 1
Paratanytarsus Non-Biting Midges 1
Microtendipes Non-Biting Midges 1
Ablabesmyia Non-Biting Midge 1
Stegopterna Black Fly 1
Heptageniidae Flathead Mayfly 1
Cura Flatworm 1
Goniobasis 1
Gammarus Amphipod 1
Synurella Amphipod 1
Enchytraeidae Aquatic Worm 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.