MBSS Site Summary for: YOUG-106-R-2001

Site Photos

Field photo showing stream conditions at site YOUG-106-R-2001-1 (Opens in a new window) Field photo showing stream conditions at site YOUG-106-R-2001-2 (Opens in a new window)

Located on LITTLE BEAR CR UT1 in the Youghiogheny River watershed, 8-digit code: 05020201.
This stream was visited in the spring on 4/3/2001 and again in the summer on 6/20/2001.

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 - 4.5 / 5.0
Benthic IBI Fair - 3.8 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 505 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 9 %
Agricultural Land Use 8 %
Forested Land Use 80 %


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 16/20 (Optimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = 30 meters 		10/20 (Marginal)
Riffle Quality
Riffle Extent = 55 meters 		16/20 (Optimal)
Shading 95 %
Embeddedness 15 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 15.7 ° C
Dissolved oxygen (DO) 7.8 mg/L
pH (lab) 7.35
Conductivity 180 µmho/cm
Alkalinity
(acid neutralizing capacity) 		220 µeq/L
Dissolved organic carbon (DOC) 0.6 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:
Fish data is unavailable or no fish observed.

Amphibians and Reptiles:
Eastern Gartersnake

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Prosimulium Black Fly 31
Amphinemura Spring Stonefly 13
Dolophilodes Medium Evening Sedge Caddisfly 8
Baetidae Small Minnow Mayfly 6
Baetis Blue-Winged Olive Mayfly 5
Leuctridae Rolledwinged Stonefly 4
Isoperla Stripetail Stonefly 4
Ephemerella Sulphur Mayfly 3
Orthocladiinae Midge 3
Tvetenia Non-Biting Midges 3
Perlodidae Perlodid Stonefly 3
Ameletus Combmouthed Minnow Mayfly 3
Rhyacophila Free-Living Caddisfly 2
Dicranota Hairy-Eyed Cranefly 2
Diplectrona Net-Spinning Caddisfly 2
Parametriocnemus Non-Biting Midges 2
Oulimnius Riffle Beetle 1
Tallaperla Roach-Like Stonefly 1
Epeorus Mayfly 1
Cricotopus/Orthocladius Midge 1
Pteronarcys Giant Stonefly 1
Chloroperlidae Green Stonefly 1
Trichoptera Caddisfly 1
Tipula Crane Fly 1
Cinygmula Dark Red Quill Mayfly 1
Wormaldia Fingernet Caddisfly 1
Heptageniidae Flathead Mayfly 1
Diamesa Bloodworm 1
Paraleptophlebia Blue Quill Mayfly 1
Chelifera Aquatic Dance Fly 1
Branchiobdellida Aquatic Worm 1
Naididae Aquatic 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.