MBSS Site Summary for: BA-P-103-124-96


Located on CARROLL BR UT1 in the Loch Raven Reservoir watershed, 8-digit code: 02130805.
This stream was visited in the spring on 4/16/1996 and again in the summer on 7/9/1996.

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 - 2.3 / 5.0
Benthic IBI Poor - 2.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 144 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 %
Agricultural Land Use 88.2 %
Forested Land Use 11.1 %


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 13/20 (Suboptimal)
Velocity/Depth Diversity 8/20 (Marginal)
Pool Quality
Pool Extent = meters 		8/20 (Marginal)
Riffle Quality 10/20 (Marginal)
Shading 65 %
Embeddedness 70 %
The embeddedness, a measure of silt on the stream bottom, was 70%. This is relatively high, and may exclude some biota.


Stream Water Quality:
Water temperature 25.9 ° C
Dissolved oxygen (DO) 7.7 mg/L
pH (lab) 7.32
Conductivity 192 µmho/cm
Alkalinity
(acid neutralizing capacity) 		885.7 µeq/L
Dissolved organic carbon (DOC) 3.3 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 5 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 43
Creek Chub 24
Rosyside Dace 5
Bluegill 3
American Eel 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Dusky Salamander
Northern Green Frog

Crayfish:
Cambarus
Cambarus bartonii bartonii
Orconectes virilis

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Stenelmis Beetle 33
Diamesa Bloodworm 15
Hydropsyche Net-Spinning Caddisfly 15
Polypedilum Non-Biting Midges 13
Conchapelopia Non-Biting Midges 6
Stenonema Flatheaded Mayfly 5
Acroneuria Golden Stoneflies 1
Antocha Crane Fly 1
Chimarra Fingernet Caddisfly 1
Bezzia Biting Midge 1
Enchytraeidae Aquatic Worm 1
Naididae Aquatic Worm 1
Eukiefferiella Non-Biting Midges 1
Baetidae Small Minnow Mayfly 1
Ephemerella Sulphur Mayfly 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.