MBSS Site Summary for: GA-A-062-203-97


Located on MILL RUN in the Youghiogheny River watershed, 8-digit code: 05020201.
This stream was visited in the spring on 4/7/1997 and again in the summer on 7/30/1997.

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 - 5.0 / 5.0
Benthic IBI Good - 4.8 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 4,695 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0.6 %
Agricultural Land Use 12.9 %
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 18/20 (Optimal)
Epifaunal Substrate 18/20 (Optimal)
Velocity/Depth Diversity 12/20 (Suboptimal)
Pool Quality
Pool Extent = meters 		16/20 (Optimal)
Riffle Quality 16/20 (Optimal)
Shading 95 %
Embeddedness 15 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 15 ° C
Dissolved oxygen (DO) 9.3 mg/L
pH (lab) 7.13
Conductivity 228 µmho/cm
Alkalinity
(acid neutralizing capacity) 		168.1 µeq/L
Dissolved organic carbon (DOC) 0.8 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 2 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Longnose Dace 31
Blacknose Dace 2
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Allegheny Mountain Dusky Salamander
Northern Dusky Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Cinygmula Dark Red Quill Mayfly 34
Ephemerella Sulphur Mayfly 25
Leuctra  Rolled-Winged Stonefly 8
Hydropsyche Net-Spinning Caddisfly 8
Epeorus Mayfly 8
Amphinemura Spring Stonefly 7
Paraleptophlebia Blue Quill Mayfly 6
Baetis Blue-Winged Olive Mayfly 6
Rhyacophila Free-Living Caddisfly 3
Pteronarcys Giant Stonefly 3
Diplectrona Net-Spinning Caddisfly 3
Isoperla Stripetail Stonefly 3
Acentrella Tiny Blue-Winged Olive Mayflies 3
Oulimnius Riffle Beetle 2
Centroptilum Small Minnow Mayfly 1
Parametriocnemus Non-Biting Midges 1
Polypedilum Non-Biting Midges 1
Rheocricotopus Non-Biting Midges 1
Tanytarsini Non-Biting Midges 1
Trissopelopia Non-Biting Midges 1
Dicranota Hairy-Eyed Cranefly 1
Naididae Aquatic Worm 1
Prosimulium Black Fly 1
Lumbriculidae 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.