MBSS Site Summary for: YOUG-432-S-2000

Site Photos

Field photo showing stream conditions at site YOUG-432-S-2000-01 (Opens in a new window) Field photo showing stream conditions at site YOUG-432-S-2000-02 (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 4/18/2000 and again in the summer on 8/1/2000.

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 9,897 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0.1 %
Agricultural Land Use 22.9 %
Forested Land Use 76.2 %


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 = 25 meters 		13/20 (Suboptimal)
Riffle Quality
Riffle Extent = 60 meters 		18/20 (Optimal)
Shading 85 %
Embeddedness 10 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 17.6 ° C
Dissolved oxygen (DO) 8.5 mg/L
pH (lab) 7.01
Conductivity 50 µmho/cm
Alkalinity
(acid neutralizing capacity) 		105.1 µeq/L
Dissolved organic carbon (DOC) 2.3 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 4
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 20
Ephemerella Sulphur Mayfly 17
Epeorus Mayfly 15
Acentrella Tiny Blue-Winged Olive Mayflies 8
Stempellinella Non-Biting Midges 7
Blepharicera Net-Winged Midges 5
Isoperla Stripetail Stonefly 5
Parametriocnemus Non-Biting Midges 4
Lepidostoma Little Brown Sedge Caddisfly 4
Prosimulium Black Fly 4
Leuctra  Rolled-Winged Stonefly 3
Diplectrona Net-Spinning Caddisfly 3
Chloroperlidae Green Stonefly 3
Heptageniidae Flathead Mayfly 3
Amphinemura Spring Stonefly 3
Oulimnius Riffle Beetle 3
Rheocricotopus Non-Biting Midges 2
Hexatoma Crane Fly 2
Cinygmula Dark Red Quill Mayfly 2
Rhyacophila Free-Living Caddisfly 1
Heptagenia 1
Gammarus Amphipod 1
Probezzia Biting Midges 1
Diamesa Bloodworm 1
Drunella Blue-Winged Olive Mayfly 1
Neophylax Caddisfly 1
Antocha Crane Fly 1
Peltoperlidae Roachlike Stonefly 1
Isonychia Slate Drake Mayfly 1
Baetidae Small Minnow Mayfly 1
Acerpenna Tiny Blue-Winged Olive Mayflies 1
Ectopria Water Penny Beetle 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.