MBSS Site Summary for: PRET-118-X-2005


Located on Prettyboy Reservoir UT2 in the Prettyboy Reservoir watershed, 8-digit code: 02130806.
This stream was visited in the spring on 7/26/2005 and again in the summer on 7/26/2005.

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 Good - 5.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 950 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 46 %
Forested Land Use 52 %


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

Physical Stream Habitat
Instream Habitat 16/20 (Optimal)
Epifaunal Substrate 15/20 (Suboptimal)
Velocity/Depth Diversity 9/20 (Marginal)
Pool Quality
Pool Extent = 23 meters 		9/20 (Marginal)
Riffle Quality
Riffle Extent = 49 meters 		16/20 (Optimal)
Shading 90 %
Embeddedness 40 %


Stream Water Quality:
Water temperature 19.6 ° C
Dissolved oxygen (DO) 8.3 mg/L
Conductivity 148 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:
No amphibians and reptiles noted.

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
Ephemerella Sulphur Mayfly 23
Amphinemura Spring Stonefly 9
Diplectrona Net-Spinning Caddisfly 7
Lanthus Clubtail Dragonfly 5
Leuctra  Rolled-Winged Stonefly 4
Rheosmittia Non-Biting Midges 4
Brillia Non-Biting Midges 4
Perlodidae Perlodid Stonefly 3
Baetis Blue-Winged Olive Mayfly 3
Stenonema Flatheaded Mayfly 2
Rhyacophila Free-Living Caddisfly 2
Pycnopsyche Great Autumn Brown Sedge Caddisfly 2
Nigronia Megaloptera (Dark Fishfly) 2
Orthocladius Non-Biting Midges 2
Parametriocnemus Non-Biting Midges 2
Optioservus Riffle Beetle 2
Tallaperla Roach-Like Stonefly 2
Baetidae Small Minnow Mayfly 2
Cordulegaster Spiketail Dragonfly 1
Oulimnius Riffle Beetle 1
Ectopria Water Penny Beetle 1
Paraphaenocladius Non-Biting Midges 1
Polypedilum Non-Biting Midges 1
Leptophlebiidae Pronggilled Mayfly 1
Hydropsyche Net-Spinning Caddisfly 1
Orthocladiinae Midge 1
Cheumatopsyche Net-Spinning Caddisfly 1
Acroneuria Golden Stoneflies 1
Dixa 1
Anchytarsus Beetle 1
Simulium Black Fly 1
Diamesa Bloodworm 1
Ameletus Combmouthed Minnow Mayfly 1
Antocha Crane Fly 1
Tipula Crane Fly 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.