MBSS Site Summary for: PRET-204-X-2005


Located on Peggys Run in the Prettyboy Reservoir watershed, 8-digit code: 02130806.
This stream was visited in the spring on 9/19/2005 and again in the summer on 9/19/2005.

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 Fair - 3.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 1,697 acres Cows standing in a stream at a site with high agricultural land use. Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
Urban Land Use 1 %
Agricultural Land Use 85 %
Forested Land Use 14 %


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

Physical Stream Habitat
Instream Habitat 10/20 (Marginal)
Epifaunal Substrate 15/20 (Suboptimal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 67 meters 		11/20 (Suboptimal)
Riffle Quality
Riffle Extent = 28 meters 		12/20 (Suboptimal)
Shading 76 %
Embeddedness 35 %


Stream Water Quality:
Water temperature 17.9 ° C
Dissolved oxygen (DO) 8.8 mg/L
Conductivity 237 µmho/cm

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:
American Bullfrog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
Mile-A-Minute
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Dolophilodes Medium Evening Sedge Caddisfly 46
Amphinemura Spring Stonefly 15
Orthocladius Non-Biting Midges 11
Polypedilum Non-Biting Midges 10
Diamesa Bloodworm 6
Hydropsyche Net-Spinning Caddisfly 5
Acentrella Tiny Blue-Winged Olive Mayflies 4
Ephemerella Sulphur Mayfly 3
Eukiefferiella Non-Biting Midges 2
Cheumatopsyche Net-Spinning Caddisfly 2
Rheosmittia Non-Biting Midges 2
Tanypodinae Non-Biting Midges 1
Tanytarsus Non-Biting Midges 1
Tvetenia Non-Biting Midges 1
Stenonema Flatheaded Mayfly 1
Girardia Freshwater Flatworm 1
Dineutus Whirlygig 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.