MBSS Site Summary for: CR-P-197-211-95


Located on N BR PATAPSCO R UT1 in the Liberty Reservoir watershed, 8-digit code: 02130907.
This stream was visited in the spring on 4/7/1995 and again in the summer on 7/31/1995.

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 - 3.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 2,672 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 0.6 %
Agricultural Land Use 74.6 %
Forested Land Use 23.7 %


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 15/20 (Suboptimal)
Velocity/Depth Diversity 16/20 (Optimal)
Pool Quality
Pool Extent = meters 		15/20 (Suboptimal)
Riffle Quality 17/20 (Optimal)
Shading 90 %
Embeddedness 15 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 20 ° C
Dissolved oxygen (DO) 9 mg/L
pH (lab) 7.28
Conductivity 168 µmho/cm
Alkalinity
(acid neutralizing capacity) 		420.7 µeq/L
Dissolved organic carbon (DOC) 0 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 13 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blue Ridge Sculpin 879
White Sucker 129
Rosyside Dace 104
Blacknose Dace 78
Longnose Dace 65
Creek Chub 23
Green Sunfish 13
Cutlip Minnow 12
Tessellated Darter 5
Bluegill 4
Largemouth Bass 3
Yellow Bullhead 3
Central Stoneroller 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Dusky Salamander
Northern Green Frog
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 32
Parametriocnemus Non-Biting Midges 17
Paraleptophlebia Blue Quill Mayfly 16
Optioservus Riffle Beetle 5
Oulimnius Riffle Beetle 5
Ephemerella Sulphur Mayfly 5
Trissopelopia Non-Biting Midges 4
Diamesa Bloodworm 4
Stenonema Flatheaded Mayfly 2
Serratella Mayfly 1
Prosimulium Black Fly 1
Tanytarsus Non-Biting Midges 1
Hydropsyche Net-Spinning Caddisfly 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.