MBSS Site Summary for: CR-P-362-302-95


Located on PINEY RUN in the S Branch Patapsco watershed, 8-digit code: 02130908.
This stream was visited in the spring on 4/6/1995 and again in the summer on 7/19/1995.

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 Fair - 3.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 11,405 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 3.8 %
Agricultural Land Use 68 %
Forested Land Use 25.1 %


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

Physical Stream Habitat
Instream Habitat 17/20 (Optimal)
Epifaunal Substrate 16/20 (Optimal)
Velocity/Depth Diversity 15/20 (Suboptimal)
Pool Quality
Pool Extent = meters 		17/20 (Optimal)
Riffle Quality 16/20 (Optimal)
Shading 55 %
Embeddedness 15 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 23.6 ° C
Dissolved oxygen (DO) 9.2 mg/L
pH (lab) 7.48
Conductivity 198 µmho/cm
Alkalinity
(acid neutralizing capacity) 		695.1 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 20 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blue Ridge Sculpin 264
White Sucker 114
Northern Hogsucker 56
Central Stoneroller 54
Bluegill 37
Longnose Dace 36
Cutlip Minnow 34
Margined Madtom 33
Largemouth Bass 21
Blacknose Dace 15
Redbreast Sunfish 13
Brown Trout 10
Tessellated Darter 8
Smallmouth Bass 7
Common Shiner 6
Brown Bullhead 2
Creek Chub 2
Rosyside Dace 2
Pumpkinseed 1
Yellow Bullhead 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
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
Hemerodromia Tiny Fly 14
Antocha Crane Fly 11
Eukiefferiella Non-Biting Midges 9
Isonychia Slate Drake Mayfly 8
Ephemerella Sulphur Mayfly 6
Hydropsyche Net-Spinning Caddisfly 6
Sublettea 6
Polypedilum Non-Biting Midges 4
Corydalus Dobsonfly 2
Nematomorpha Horsehair Worm 2
Parametriocnemus Non-Biting Midges 1
Stenonema Flatheaded Mayfly 1
Chelifera Aquatic Dance Fly 1
Perlidae Common Stonefly 1
Acentrella Tiny Blue-Winged Olive Mayflies 1
Amphinemura Spring Stonefly 1
Prostoia Spring Stonefly 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.