MBSS Site Summary for: ANTI-102-X-2015


Located on 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 6/30/2015.

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 - 4.0 / 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 1,031 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 8.6 %
Agricultural Land Use 3.5 %
Forested Land Use 87.7 %


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

Physical Stream Habitat
Instream Habitat 10/20 (Marginal)
Epifaunal Substrate 16/20 (Optimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = 19 meters 		7/20 (Marginal)
Riffle Quality
Riffle Extent = 60 meters 		14/20 (Suboptimal)
Shading 45 %
Embeddedness 10 %


Stream Water Quality:
pH (lab) 7.43
Alkalinity
(acid neutralizing capacity) 		284.3 µeq/L
Dissolved organic carbon (DOC) 0.9427 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 3 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 293
Blue Ridge Sculpin 176
Creek Chub 7
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Eastern Ratsnake
Northern Two-Lined Salamander

Crayfish:
Cambarus bartonii bartonii

Exotic Plants:
Daylily
Japanese Barberry
Japanese Spiraea
Japanese Stiltgrass
Multiflora Rose
Tree Of Heaven
Wineberry
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Micropsectra Non-Biting Midges 55
Ephemerella Sulphur Mayfly 13
Polypedilum Non-Biting Midges 12
Stempellinella Non-Biting Midges 6
Cheumatopsyche Net-Spinning Caddisfly 6
Hexatoma Crane Fly 6
Diplectrona Net-Spinning Caddisfly 4
Eukiefferiella Non-Biting Midges 4
Parametriocnemus Non-Biting Midges 4
Sweltsa Stonefly 4
Leuctra  Rolled-Winged Stonefly 3
Prosimulium Black Fly 3
Microtendipes Non-Biting Midges 2
Chloroperlidae Green Stonefly 2
Dicranota Hairy-Eyed Cranefly 1
Epeorus Mayfly 1
Stilocladius Midge 1
Parachaetocladius Non-Biting Midge 1
Baetis Blue-Winged Olive Mayfly 1
Lanthus Clubtail Dragonfly 1
Antocha Crane Fly 1
Clinocera Aquatic Dance Fly 1
Rhyacophila Free-Living Caddisfly 1
Psephenus Water Penny 1
Tanypodinae Non-Biting Midges 1
Tvetenia Non-Biting Midges 1
Prostoia Spring Stonefly 1
Ostrocerca 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.