MBSS Site Summary for: BA-P-302-115-96


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

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 - 2.7 / 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 605 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 38.7 %
Forested Land Use 61.2 %


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 11/20 (Suboptimal)
Velocity/Depth Diversity 6/20 (Marginal)
Pool Quality
Pool Extent = meters 		5/20 (Poor)
Riffle Quality 6/20 (Marginal)
Shading 50 %
Embeddedness 60 %
The embeddedness, a measure of silt on the stream bottom, was 60%. This is relatively high, and may exclude some biota.


Stream Water Quality:
Water temperature 24.3 ° C
Dissolved oxygen (DO) 9.1 mg/L
pH (lab) 7.4
Conductivity 181 µmho/cm
Alkalinity
(acid neutralizing capacity) 		524.9 µeq/L
Dissolved organic carbon (DOC) 1.7 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 4 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Creek Chub 104
Blacknose Dace 59
Rosyside Dace 18
Green Sunfish 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Northern Two-Lined Salamander

Crayfish:
Orconectes virilis

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Ephemerella Sulphur Mayfly 30
Optioservus Riffle Beetle 15
Oulimnius Riffle Beetle 14
Diplectrona Net-Spinning Caddisfly 7
Epeorus Mayfly 4
Prostoia Spring Stonefly 4
Eurylophella Mayfly 3
Prosimulium Black Fly 3
Diamesa Bloodworm 3
Ameletus Combmouthed Minnow Mayfly 3
Tipula Crane Fly 3
Stenonema Flatheaded Mayfly 2
Anchytarsus Beetle 2
Cricotopus/Orthocladius Midge 2
Leptophlebia Pronggilled Mayfly 1
Crangonyx Amphipod 1
Stenelmis Beetle 1
Hexatoma Crane Fly 1
Pseudolimnophila 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.