MBSS Site Summary for: LIBE-103-C-2001


Located on COOKS BR in the Liberty Reservoir watershed, 8-digit code: 02130907.
This stream was visited in the spring on 4/11/2001 and again in the summer on 6/15/2001.

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 - 5.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 769 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 1 %
Agricultural Land Use 33 %
Forested Land Use 64 %


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 18/20 (Optimal)
Velocity/Depth Diversity 15/20 (Suboptimal)
Pool Quality
Pool Extent = 44 meters
16/20 (Optimal)
Riffle Quality
Riffle Extent = 39 meters
18/20 (Optimal)
Shading 60 %
Embeddedness 20 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:

Water temperature 17.3 ° C
Dissolved oxygen (DO) 8.6 mg/L
pH (lab) 7.38
Conductivity 140 µmho/cm
Alkalinity
(acid neutralizing capacity)
682.4 µeq/L
Dissolved organic carbon (DOC) 1.2 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
Blue Ridge Sculpin 314
Blacknose Dace 203
Rosyside Dace 78
Creek Chub 50
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:

Fowler's Toad
Northern Two-Lined Salamander

Crayfish:

No crayfish noted.

Exotic Plants:

Japanese Honeysuckle
Japanese Stiltgrass
Mile-A-Minute
Multiflora Rose
 

Benthic Macroinvertebrates:

Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Ephemerella Sulphur Mayfly 35
Serratella Mayfly 24
Optioservus Riffle Beetle 5
Tanytarsini Non-Biting Midges 4
Amphinemura Spring Stonefly 4
Ancyronyx Spider Riffle Beetle 3
Rheosmittia Non-Biting Midges 3
Hydropsyche Net-Spinning Caddisfly 3
Clinocera Aquatic Dance Fly 3
Prosimulium Black Fly 3
Neophylax Caddisfly 3
Ceratopogonidae Biting Midge 2
Cricotopus/Orthocladius Midge 2
Pycnopsyche Great Autumn Brown Sedge Caddisfly 2
Epeorus Mayfly 2
Eurylophella Mayfly 2
Tanytarsus Non-Biting Midges 2
Polypedilum Non-Biting Midges 2
Baetidae Small Minnow Mayfly 2
Trissopelopia Non-Biting Midges 2
Zavrelimyia Non-Biting Midges 1
Perlodidae Perlodid Stonefly 1
Leptophlebiidae Pronggilled Mayfly 1
Oulimnius Riffle Beetle 1
Thienemannimyia group Non-Biting Midges 1
Tanypodinae Non-Biting Midges 1
Chironominae Non-Biting Midge 1
Corynoneura Non-Biting Midges 1
Orthocladius Non-Biting Midges 1
Gordiidae Horsehair Worm 1
Diplectrona Net-Spinning Caddisfly 1
Dolophilodes Medium Evening Sedge Caddisfly 1
Dixa 1
Tubificidae Aquatic Worm 1
Hydropsychidae Common Netspinner Caddisfly 1
Perlidae Common Stonefly 1
Hexatoma Crane Fly 1
Sphaerium Fingernail Clam 1
Acroneuria Golden Stoneflies 1
Ephemerellidae Spiny Crawler Mayfly 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.