MBSS Site Summary for: LIBE-103-C-2000


Located on COOKS BR in the Liberty Reservoir watershed, 8-digit code: 02130907.
This stream was visited in the spring on 4/11/2000 and again in the summer on 6/7/2000.

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 Good - 4.7 / 5.0
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 772 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0.9 %
Agricultural Land Use 25.7 %
Forested Land Use 73.2 %


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

Physical Stream Habitat
Instream Habitat 17/20 (Optimal)
Epifaunal Substrate 17/20 (Optimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = 57 meters 		10/20 (Marginal)
Riffle Quality
Riffle Extent = 30 meters 		16/20 (Optimal)
Shading 80 %
Embeddedness 20 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 16.2 ° C
Dissolved oxygen (DO) 9 mg/L
pH (lab) 7.43
Conductivity 130 µmho/cm
Alkalinity
(acid neutralizing capacity) 		696.6 µeq/L
Dissolved organic carbon (DOC) 1.4 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
Blue Ridge Sculpin 215
Blacknose Dace 195
Rosyside Dace 58
Creek Chub 47
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Mile-A-Minute
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Ephemerella Sulphur Mayfly 60
Simulium Black Fly 10
Serratella Mayfly 6
Amphinemura Spring Stonefly 5
Optioservus Riffle Beetle 4
Oulimnius Riffle Beetle 3
Dolophilodes Medium Evening Sedge Caddisfly 3
Parametriocnemus Non-Biting Midges 3
Polypedilum Non-Biting Midges 3
Neophylax Caddisfly 3
Empididae Dance Fly 3
Prosimulium Black Fly 2
Baetidae Small Minnow Mayfly 2
Conchapelopia Non-Biting Midges 1
Perlodidae Perlodid Stonefly 1
Leptophlebiidae Pronggilled Mayfly 1
Chelifera Aquatic Dance Fly 1
Paraleptophlebia Blue Quill Mayfly 1
Chrysops Deerfly 1
Glossosoma Little Black Caddisfly 1
Antocha Crane Fly 1
Tipula Crane Fly 1
Acentrella Tiny Blue-Winged Olive Mayflies 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.