MBSS Site Summary for: YOUG-432-S-2002

Site Photos

Field photo showing stream conditions at site YOUG-432-S-2002-1 (Opens in a new window) Field photo showing stream conditions at site YOUG-432-S-2002-2 (Opens in a new window)

Located on BEAR CR in the Youghiogheny River watershed, 8-digit code: 05020201.
This stream was visited in the spring on 4/2/2002 and again in the summer on 9/24/2002.

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 - 4.0 / 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 9,900 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 3.6 %
Agricultural Land Use 21.8 %
Forested Land Use 73.7 %


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 15/20 (Suboptimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = 33 meters 		17/20 (Optimal)
Riffle Quality
Riffle Extent = 60 meters 		17/20 (Optimal)
Shading 92 %
Embeddedness 35 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 10.7 ° C
Dissolved oxygen (DO) 10.7 mg/L
pH (lab) 7.11
Conductivity 80 µmho/cm
Alkalinity
(acid neutralizing capacity) 		100 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 2 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 11
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 13
Epeorus Mayfly 13
Tanytarsini Non-Biting Midges 12
Oulimnius Riffle Beetle 11
Diplectrona Net-Spinning Caddisfly 10
Prosimulium Black Fly 7
Leuctra  Rolled-Winged Stonefly 6
Ephemerella Sulphur Mayfly 6
Micropsectra Non-Biting Midges 4
Stenonema Flatheaded Mayfly 4
Leptophlebiidae Pronggilled Mayfly 3
Optioservus Riffle Beetle 3
Amphinemura Spring Stonefly 2
Isoperla Stripetail Stonefly 2
Lumbriculidae Worm 2
Chloroperlidae Green Stonefly 2
Orthocladiinae Midge 2
Neophylax Caddisfly 2
Cinygmula Dark Red Quill Mayfly 2
Heptageniidae Flathead Mayfly 2
Antocha Crane Fly 1
Hexatoma Crane Fly 1
Baetis Blue-Winged Olive Mayfly 1
Cheumatopsyche Net-Spinning Caddisfly 1
Lepidostoma Little Brown Sedge Caddisfly 1
Rhyacophila Free-Living Caddisfly 1
Acroneuria Golden Stoneflies 1
Acerpenna Tiny Blue-Winged Olive Mayflies 1
Polycentropus Tube Maker Caddisfly 1
Sweltsa Stonefly 1
Tallaperla Roach-Like Stonefly 1
Perlodidae Perlodid Stonefly 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.