MBSS Site Summary for: WA-V-161-214-95


Located on LITTLE BEAVER CR UT1 in the Antietam Creek watershed, 8-digit code: 02140502.
This stream was visited in the spring on 3/7/1995 and again in the summer on 7/24/1995.

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 - 3.8 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 1,921 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 1.3 %
Agricultural Land Use 10 %
Forested Land Use 87.1 %


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 12/20 (Suboptimal)
Pool Quality
Pool Extent = meters 		13/20 (Suboptimal)
Riffle Quality 10/20 (Marginal)
Shading 95 %
Embeddedness 50 %


Stream Water Quality:
Water temperature 21.5 ° C
Dissolved oxygen (DO) 7.6 mg/L
pH (lab) 7.37
Conductivity 180 µmho/cm
Alkalinity
(acid neutralizing capacity) 		286.7 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 6 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blue Ridge Sculpin 506
Blacknose Dace 282
Fantail Darter 57
Longnose Dace 16
Brown Trout 5
White Sucker 3
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Dusky Salamander
Northern Two-Lined Salamander
Northern Watersnake

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Optioservus Riffle Beetle 14
Ephemerella Sulphur Mayfly 13
Diphetor Mayfly 12
Sympotthastia Non-Biting Midges 11
Oulimnius Riffle Beetle 10
Orthocladius Non-Biting Midges 10
Prosimulium Black Fly 9
Parametriocnemus Non-Biting Midges 8
Tvetenia Non-Biting Midges 8
Nemoura 7
Micropsectra Non-Biting Midges 7
Cheumatopsyche Net-Spinning Caddisfly 6
Brillia Non-Biting Midges 5
Epeorus Mayfly 4
Dolophilodes Medium Evening Sedge Caddisfly 4
Eukiefferiella Non-Biting Midges 3
Antocha Crane Fly 2
Sweltsa Stonefly 2
Hexatoma Crane Fly 1
Tipula Crane Fly 1
Stenonema Flatheaded Mayfly 1
Rhyacophila Free-Living Caddisfly 1
Acroneuria Golden Stoneflies 1
Neophylax Caddisfly 1
Hydropsyche Net-Spinning Caddisfly 1
Parachaetocladius Non-Biting Midge 1
Polypedilum 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.