MBSS Site Summary for: ANTI-201-X-2015


Located on LITTLE BEAVER CREEK in the Antietam Creek watershed, 8-digit code: 02140502.
This stream was visited in the spring on 3/31/2015 and again in the summer on 7/8/2015.

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 - 3.8 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 1,507 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 7.3 %
Agricultural Land Use 1 %
Forested Land Use 89.3 %


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 14/20 (Suboptimal)
Pool Quality
Pool Extent = 42 meters 		14/20 (Suboptimal)
Riffle Quality
Riffle Extent = 34 meters 		16/20 (Optimal)
Shading 60 %
Embeddedness 25 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
pH (lab) 7.36
Alkalinity
(acid neutralizing capacity) 		297.9 µeq/L
Dissolved organic carbon (DOC) 1.0071 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 8 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 229
Blue Ridge Sculpin 171
Brown Trout 35
Bluegill 27
Fantail Darter 19
Green Sunfish 13
Longnose Dace 8
White Sucker 3
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander
Northern Water Snake

Crayfish:
Cambarus bartonii bartonii
Orconectes virilis

Exotic Plants:
Daylily
Japanese Barberry
Japanese Honeysuckle
Japanese Knotweed
Japanese Stiltgrass
Multiflora Rose
Norway Maple
Wineberry
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Micropsectra Non-Biting Midges 45
Oulimnius Riffle Beetle 17
Stempellinella Non-Biting Midges 14
Amphinemura Spring Stonefly 13
Ephemerella Sulphur Mayfly 12
Isoperla Stripetail Stonefly 10
Sympotthastia Non-Biting Midges 5
Rheotanytarsus Non-Biting Midges 5
Baetis Blue-Winged Olive Mayfly 5
Diphetor Mayfly 4
Epeorus Mayfly 4
Tanytarsus Non-Biting Midges 4
Neophylax Caddisfly 3
Orthocladius Non-Biting Midges 3
Hydropsyche Net-Spinning Caddisfly 3
Clinocera Aquatic Dance Fly 2
Orthocladiinae Midge 2
Lype Net Tube Caddisfly 2
Antocha Crane Fly 1
Hexatoma Crane Fly 1
Rhyacophila Free-Living Caddisfly 1
Maccaffertium March Brown And Cahill Mayfly 1
Ceratopogonidae Biting Midge 1
Prosimulium Black Fly 1
Brillia Non-Biting Midges 1
Eukiefferiella Non-Biting Midges 1
Neoplasta 1
Thienemannimyia Group Non-Biting Midges 1
Optioservus Riffle Beetle 1
Psephenus Water Penny 1
Lumbriculidae Worm 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.