MBSS Site Summary for: GEOR-106-R-2017

Site Photos

Field photo showing stream conditions at site GEOR-106-R-2017-MidpointDownstream (Opens in a new window) Field photo showing stream conditions at site GEOR-106-R-2017-MidpointUpstream (Opens in a new window)

Located on Mill Run in the Georges Creek watershed, 8-digit code: 02141004.
This stream was visited in the spring on 3/3/2017 and again in the summer on 6/9/2017.

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 N R
Benthic IBI Good - 4.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area No data available A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 3.4 %
Agricultural Land Use 2 %
Forested Land Use 84.6 %


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 16/20 (Optimal)
Velocity/Depth Diversity 9/20 (Marginal)
Pool Quality
Pool Extent = 30 meters 		8/20 (Marginal)
Riffle Quality
Riffle Extent = 64 meters 		15/20 (Suboptimal)
Shading 95 %
Embeddedness 30 %


Stream Water Quality:
pH (lab) 6.56
Alkalinity
(acid neutralizing capacity) 		41.5 µeq/L
Dissolved organic carbon (DOC) 1.419 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 1 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
No Fish Observed 0
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Allegheny Mountain Dusky Salamander
Red-Spotted Newt

Crayfish:
Cambarus bartonii bartonii

Exotic Plants:
Autumn Olive
Garlic Mustard
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
EPHEMERELLA Sulphur Mayfly 26
PERLODIDAE Perlodid Stonefly 12
LEUCTRA  Rolled-Winged Stonefly 7
NEMOURIDAE Nemourid Stonefly 6
TANYTARSUS Non-Biting Midges 6
PROSIMULIUM Black Fly 5
CHLOROPERLIDAE Green Stonefly 4
STEMPELLINELLA Non-Biting Midges 4
EPHEMERELLIDAE Spiny Crawler Mayfly 3
ISOPERLA Stripetail Stonefly 3
DIPLECTRONA Net-Spinning Caddisfly 3
LUMBRICULIDAE Worm 3
PHILOPOTAMIDAE Fingernet Caddisfly 2
AMELETUS Combmouthed Minnow Mayfly 2
CAMBARUS 2
LEUCTRIDAE Rolledwinged Stonefly 2
EPEORUS Mayfly 2
THIENEMANNIMYIA GROUP Non-Biting Midges 2
CHAETOCLADIUS Non-Biting Midges 2
EUKIEFFERIELLA Non-Biting Midges 2
PARAMETRIOCNEMUS Non-Biting Midges 1
DIPLOCLADIUS Non-Biting Midges 1
TVETENIA Non-Biting Midges 1
LIMNEPHILIDAE Northern Casemaker Caddisfly 1
OULIMNIUS Riffle Beetle 1
AMPHINEMURA Spring Stonefly 1
ISOTOMIDAE Springtail 1
YUGUS 1
SIALIS Alderfly 1
CERATOPOGON Biting Midge 1
ORMOSIA Cranefly 1
HELENIELLA European Non-Biting Midge 1
NEOPHYLAX Caddisfly 1
WORMALDIA Fingernet Caddisfly 1
HEPTAGENIIDAE Flathead Mayfly 1
RHYACOPHILA Free-Living Caddisfly 1
HYDROPSYCHE Net-Spinning Caddisfly 1
DICRANOTA Hairy-Eyed Cranefly 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.