MBSS Site Summary for: GA-A-521-108-95


Located on MILL RUN in the Youghiogheny River watershed, 8-digit code: 05020201.
This stream was visited in the spring on 4/19/1995 and again in the summer on 8/18/1995.

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 Poor - 2.0 / 5.0
Benthic IBI Fair - 3.5 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 1,861 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 1.1 %
Agricultural Land Use 11.7 %
Forested Land Use 85.5 %


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

Physical Stream Habitat
Instream Habitat 14/20 (Suboptimal)
Epifaunal Substrate 11/20 (Suboptimal)
Velocity/Depth Diversity 7/20 (Marginal)
Pool Quality
Pool Extent = meters 		16/20 (Optimal)
Riffle Quality 6/20 (Marginal)
Shading 50 %
Embeddedness 40 %


Stream Water Quality:
Water temperature 26.5 ° C
Dissolved oxygen (DO) 6.85 mg/L
pH (lab) 6.96
Conductivity 505 µmho/cm
Alkalinity
(acid neutralizing capacity) 		161.9 µeq/L
Dissolved organic carbon (DOC) 1 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 267
Creek Chub 145
White Sucker 19
Green Sunfish 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog
Northern Red Salamander
Northern Watersnake

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Micropsectra Non-Biting Midges 15
Eukiefferiella Non-Biting Midges 10
Cheumatopsyche Net-Spinning Caddisfly 7
Conchapelopia Non-Biting Midges 6
Tvetenia Non-Biting Midges 6
Amphinemura Spring Stonefly 4
Orthocladius Non-Biting Midges 3
Dubiraphia Riffle Beetle 3
Bezzia Biting Midge 3
Ephemera Mayfly 3
Prosimulium Black Fly 2
Serratella Mayfly 2
Nigronia Megaloptera (Dark Fishfly) 2
Pagastia 2
Leuctra  Rolled-Winged Stonefly 2
Naididae Aquatic Worm 2
Hexatoma Crane Fly 2
Pseudolimnophila Crane Fly 2
Stenelmis Beetle 2
Parametriocnemus Non-Biting Midges 2
Ephemerella Sulphur Mayfly 1
Acerpenna Tiny Blue-Winged Olive Mayflies 1
Hydropsyche Net-Spinning Caddisfly 1
Optioservus Riffle Beetle 1
Oulimnius Riffle Beetle 1
Promoresia Riffle Beetle 1
Microvelia Small Water Strider Beetle 1
Chimarra Fingernet Caddisfly 1
Stenonema Flatheaded Mayfly 1
Glossosoma Little Black Caddisfly 1
Oecetis Long-Horned Caddisfly 1
Anchytarsus Beetle 1
Psilotreta Mortarjoint Casemaker Caddisfly 1
Stenacron Mayfly 1
Phylocentropus Caddisfly 1
Eurylophella 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.