MBSS Site Summary for: BA-P-340-214-96


Located on CARROLL BR 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 Fair - 3.7 / 5.0
Benthic IBI Good - 4.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 617 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 86.4 %
Forested Land Use 13.1 %


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

Physical Stream Habitat
Instream Habitat 14/20 (Suboptimal)
Epifaunal Substrate 13/20 (Suboptimal)
Velocity/Depth Diversity 12/20 (Suboptimal)
Pool Quality
Pool Extent = meters 		13/20 (Suboptimal)
Riffle Quality 14/20 (Suboptimal)
Shading 40 %
Embeddedness 50 %


Stream Water Quality:
Water temperature 24 ° C
Dissolved oxygen (DO) 10.2 mg/L
pH (lab) 6.99
Conductivity 132 µmho/cm
Alkalinity
(acid neutralizing capacity) 		359 µeq/L
Dissolved organic carbon (DOC) 5.1 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 9 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Rosyside Dace 222
Bluntnose Minnow 165
Blacknose Dace 151
Creek Chub 89
White Sucker 22
Longnose Dace 21
Tessellated Darter 19
American Eel 1
Common Shiner 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Dusky Salamander
Northern Green Frog
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 36
Anchytarsus Beetle 8
Stenelmis Beetle 7
Stenonema Flatheaded Mayfly 7
Acerpenna Tiny Blue-Winged Olive Mayflies 5
Chimarra Fingernet Caddisfly 4
Paraleptophlebia Blue Quill Mayfly 4
Antocha Crane Fly 2
Acroneuria Golden Stoneflies 2
Chloroperlidae Green Stonefly 2
Eurylophella Mayfly 2
Cheumatopsyche Net-Spinning Caddisfly 2
Parametriocnemus Non-Biting Midges 2
Polypedilum Non-Biting Midges 2
Hemerodromia Tiny Fly 2
Rheocricotopus Non-Biting Midges 1
Trissopelopia Non-Biting Midges 1
Oulimnius Riffle Beetle 1
Isoperla Stripetail Stonefly 1
Cryptochironomus Non-Biting Midges 1
Rhyacophila Free-Living Caddisfly 1
Serratella Mayfly 1
Cricotopus/Orthocladius Midge 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.