MBSS Site Summary for: BA-P-065-119-96


Located on BUSH CABIN RUN in the Loch Raven Reservoir watershed, 8-digit code: 02130805.
This stream was visited in the spring on 4/8/1996 and again in the summer on 7/11/1996.

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 Poor - 2.0 / 5.0
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 626 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 0.3 %
Agricultural Land Use 86.6 %
Forested Land Use 13.4 %


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

Physical Stream Habitat
Instream Habitat 12/20 (Suboptimal)
Epifaunal Substrate 14/20 (Suboptimal)
Velocity/Depth Diversity 9/20 (Marginal)
Pool Quality
Pool Extent = meters 		8/20 (Marginal)
Riffle Quality 13/20 (Suboptimal)
Shading 80 %
Embeddedness 55 %
The embeddedness, a measure of silt on the stream bottom, was 55%. This is relatively high, and may exclude some biota.


Stream Water Quality:
Water temperature 13.7 ° C
Dissolved oxygen (DO) 11.9 mg/L
pH (lab) 7.31
Conductivity 152 µmho/cm
Alkalinity
(acid neutralizing capacity) 		307.8 µeq/L
Dissolved organic carbon (DOC) 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 238
Rosyside Dace 13
Creek Chub 9
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Epeorus Mayfly 16
Amphinemura Spring Stonefly 12
Ephemerella Sulphur Mayfly 7
Baetis Blue-Winged Olive Mayfly 7
Diplectrona Net-Spinning Caddisfly 5
Stenonema Flatheaded Mayfly 4
Perlodidae Perlodid Stonefly 3
Simulium Black Fly 3
Nigronia Megaloptera (Dark Fishfly) 2
Cricotopus/Orthocladius Midge 2
Prostoia Spring Stonefly 1
Prosimulium Black Fly 1
Chrysops Deerfly 1
Leptophlebiidae Pronggilled Mayfly 1
Optioservus Riffle 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.