MBSS Site Summary for: GWPY-104-N-2004


Located on SHARPERS RUN in the watershed, 8-digit code: .
This stream was visited in the spring on 3/10/2004 and again in the summer on 6/7/2004.

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 N R

Land Use

Land use can provide important information for determining stream health.
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Catchment area 1,707 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 55 %
Agricultural Land Use 8 %
Forested Land Use 36 %


Stream showing woody debris, logs, and rocky substrate.
An example of woody debris in a stream.

Physical Stream Habitat
Instream Habitat 15/20 (Suboptimal)
Epifaunal Substrate 9/20 (Marginal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 61 meters 		16/20 (Optimal)
Riffle Quality
Riffle Extent = 19 meters 		6/20 (Marginal)
Shading 90 %
Embeddedness 35 %


Stream Water Quality:
Water temperature 17.7 ° C
Dissolved oxygen (DO) 7.2 mg/L
pH (lab) 7.17
Alkalinity
(acid neutralizing capacity) 		880 µeq/L
Dissolved organic carbon (DOC) 1.1 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 3 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 65
Creek Chub 42
White Sucker 32
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Stiltgrass
Mile-A-Minute
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Orthocladius Non-Biting Midges 32
Tvetenia Non-Biting Midges 32
Cheumatopsyche Net-Spinning Caddisfly 16
Hydrobaenus Midge 8
Lumbriculidae Worm 8
Hydropsyche Net-Spinning Caddisfly 6
Polypedilum Non-Biting Midges 4
Eukiefferiella Non-Biting Midges 4
Tipula Crane Fly 3
Orthocladiinae Midge 3
Diplocladius Non-Biting Midges 1
Rheosmittia Non-Biting Midges 1
Thienemannimyia group Non-Biting Midges 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.