MBSS Site Summary for: BA-P-313-204-95


Located on RED RUN in the Gwynns Falls watershed, 8-digit code: 02130905.
This stream was visited in the spring on 4/3/1995 and again in the summer on 6/20/1995.

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 Good - 4.7 / 5.0
Benthic IBI Good - 4.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 3,332 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 6.5 %
Agricultural Land Use 40.1 %
Forested Land Use 51.9 %


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 17/20 (Optimal)
Velocity/Depth Diversity 15/20 (Suboptimal)
Pool Quality
Pool Extent = meters 		18/20 (Optimal)
Riffle Quality 17/20 (Optimal)
Shading 75 %
Embeddedness 20 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 17.7 ° C
Dissolved oxygen (DO) 8.4 mg/L
pH (lab) 7.59
Conductivity 170 µmho/cm
Alkalinity
(acid neutralizing capacity) 		925.4 µeq/L
Dissolved organic carbon (DOC) 2 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 14 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Central Stoneroller 84
Rosyside Dace 80
Brown Trout 59
White Sucker 55
Tessellated Darter 38
Creek Chub 36
Common Shiner 32
Longnose Dace 32
Blacknose Dace 29
Cutlip Minnow 19
Northern Hogsucker 12
Green Sunfish 4
Redbreast Sunfish 3
American Eel 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Watersnake
Pickerel Frog
Queen Snake
Wood Frog

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Ephemerella Sulphur Mayfly 92
Stenonema Flatheaded Mayfly 5
Hydropsyche Net-Spinning Caddisfly 4
Prosimulium Black Fly 3
Antocha Crane Fly 2
Acroneuria Golden Stoneflies 2
Dolophilodes Medium Evening Sedge Caddisfly 2
Nigronia Megaloptera (Dark Fishfly) 1
Cheumatopsyche Net-Spinning Caddisfly 1
Corydalus Dobsonfly 1
Neophylax Caddisfly 1
Conchapelopia Non-Biting Midges 1
Parametriocnemus Non-Biting Midges 1
Optioservus Riffle Beetle 1
Clinocera Aquatic Dance 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.