MBSS Site Summary for: GA-A-493-109-95


Located on LITTLE LAUREL RUN in the Casselman River watershed, 8-digit code: 05020204.
This stream was visited in the spring on 4/21/1995 and again in the summer on 8/17/1995.

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 Fair - 3.0 / 5.0
Benthic IBI Good - 4.8 / 5.0

Land Use

Land use can provide important information for determining stream health.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
Catchment area 1,538 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 20 %
Forested Land Use 79.7 %


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

Physical Stream Habitat
Instream Habitat 12/20 (Suboptimal)
Epifaunal Substrate 5/20 (Poor)
Velocity/Depth Diversity 9/20 (Marginal)
Pool Quality
Pool Extent = meters 		10/20 (Marginal)
Riffle Quality 12/20 (Suboptimal)
Shading 15 %
Embeddedness 35 %


Stream Water Quality:
Water temperature 27.5 ° C
Dissolved oxygen (DO) 6.4 mg/L
pH (lab) 6.86
Conductivity 65 µmho/cm
Alkalinity
(acid neutralizing capacity) 		109.4 µeq/L
Dissolved organic carbon (DOC) 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
Blacknose Dace 128
Creek Chub 91
Common Shiner 1
White Sucker 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Paraleptophlebia Blue Quill Mayfly 35
Leuctra  Rolled-Winged Stonefly 25
Stenonema Flatheaded Mayfly 15
Micropsectra Non-Biting Midges 9
Hydropsyche Net-Spinning Caddisfly 6
Parametriocnemus Non-Biting Midges 6
Oulimnius Riffle Beetle 6
Conchapelopia Non-Biting Midges 5
Serratella Mayfly 5
Hexatoma Crane Fly 5
Microtendipes Non-Biting Midges 4
Acerpenna Tiny Blue-Winged Olive Mayflies 3
Cheumatopsyche Net-Spinning Caddisfly 3
Acroneuria Golden Stoneflies 2
Antocha Crane Fly 2
Amphinemura Spring Stonefly 2
Ephemerella Sulphur Mayfly 2
Psephenus Water Penny 2
Polypedilum Non-Biting Midges 2
Tvetenia Non-Biting Midges 1
Boyeria Spotted Darner Dragonfly 1
Orthocladius Non-Biting Midges 1
Isoperla Stripetail Stonefly 1
Polycentropus Tube Maker Caddisfly 1
Pagastia 1
Tipula Crane Fly 1
Ceratopogon Biting Midge 1
Neophylax Caddisfly 1
Lanthus Clubtail Dragonfly 1
Dicranota Hairy-Eyed Cranefly 1
Epeorus Mayfly 1
Rhyacophila Free-Living Caddisfly 1
Diplectrona Net-Spinning Caddisfly 1
Dolophilodes Medium Evening Sedge Caddisfly 1
Nigronia Megaloptera (Dark Fishfly) 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.