MBSS Site Summary for: CR-P-240-225-95


Located on N BR PATAPSCO R in the Liberty Reservoir watershed, 8-digit code: 02130907.
This stream was visited in the spring on 4/6/1995 and again in the summer on 7/18/1995.

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 - 5.0 / 5.0
Benthic IBI Fair - 3.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 3,730 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 0.7 %
Agricultural Land Use 72.4 %
Forested Land Use 26.1 %


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

Physical Stream Habitat
Instream Habitat 15/20 (Suboptimal)
Epifaunal Substrate 12/20 (Suboptimal)
Velocity/Depth Diversity 17/20 (Optimal)
Pool Quality
Pool Extent = meters 		15/20 (Suboptimal)
Riffle Quality 11/20 (Suboptimal)
Shading 92 %
Embeddedness 35 %


Stream Water Quality:
Water temperature 20.3 ° C
Dissolved oxygen (DO) 8.2 mg/L
Conductivity 174 µmho/cm

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 18 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blue Ridge Sculpin 336
White Sucker 41
Longnose Dace 33
Blacknose Dace 24
Bluegill 23
Rosyside Dace 21
Green Sunfish 10
Cutlip Minnow 9
Common Shiner 5
Brown Trout 4
Creek Chub 4
Largemouth Bass 4
Tessellated Darter 2
Yellow Bullhead 2
Bluntnose Minnow 1
Brown Bullhead 1
Common Carp 1
Pumpkinseed 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Pickerel 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
Cricotopus/Orthocladius Midge 28
Parametriocnemus Non-Biting Midges 18
Ephemerella Sulphur Mayfly 15
Hydropsyche Net-Spinning Caddisfly 12
Cheumatopsyche Net-Spinning Caddisfly 6
Antocha Crane Fly 6
Clinocera Aquatic Dance Fly 4
Optioservus Riffle Beetle 4
Oulimnius Riffle Beetle 3
Stenonema Flatheaded Mayfly 2
Eurylophella Mayfly 2
Nemouridae Nemourid Stonefly 1
Diamesa Bloodworm 1
Chimarra Fingernet Caddisfly 1
Isonychia Slate Drake Mayfly 1
Fossaria Air Breathing Freshwater Snail 1
Conchapelopia Non-Biting Midges 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.