MBSS Site Summary for: ANTI-210-R-2015


Located on LITTLE ANTIETAM CREEK in the Antietam Creek watershed, 8-digit code: 02140502.
This stream was visited in the spring on 3/4/2015 and again in the summer on 8/13/2015.

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 - 4.7 / 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 4,608 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 9 %
Agricultural Land Use 47.9 %
Forested Land Use 42.6 %


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

Physical Stream Habitat

Instream Habitat 11/20 (Suboptimal)
Epifaunal Substrate 13/20 (Suboptimal)
Velocity/Depth Diversity 13/20 (Suboptimal)
Pool Quality
Pool Extent = 65 meters
13/20 (Suboptimal)
Riffle Quality
Riffle Extent = 17 meters
14/20 (Suboptimal)
Shading 25 %
Embeddedness 15 %


Stream Water Quality:

pH (lab) 8
Alkalinity
(acid neutralizing capacity)
1873.3 µeq/L
Dissolved organic carbon (DOC) 1.1949 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 10 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 218
Creek Chub 127
Fantail Darter 74
White Sucker 64
Longnose Dace 53
Bluntnose Minnow 31
Cutlip Minnow 12
Rock Bass 9
Bluegill 1
Largemouth Bass 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:

American Bullfrog
Northern Green Frog
Pickerel Frog

Crayfish:

Cambarus bartonii bartonii
Orconectes virilis

Exotic Plants:

Japanese Stiltgrass
Mile-A-Minute
Multiflora Rose
Shrub Honeysuckle
Wineberry
 

Benthic Macroinvertebrates:

Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Cheumatopsyche Net-Spinning Caddisfly 35
Maccaffertium March Brown And Cahill Mayfly 7
Parakiefferiella European Non-Biting Midge 7
Hydropsyche Net-Spinning Caddisfly 6
Isonychia Slate Drake Mayfly 6
Rheotanytarsus Non-Biting Midges 5
Diamesa Bloodworm 5
Antocha Crane Fly 5
Tvetenia Non-Biting Midges 5
Chimarra Fingernet Caddisfly 4
Prosimulium Black Fly 3
Parametriocnemus Non-Biting Midges 3
Polypedilum Non-Biting Midges 3
Orthocladius Non-Biting Midges 2
Corynoneura Non-Biting Midges 2
Diamesinae Non-Biting Midges 2
Microtendipes Non-Biting Midges 2
Sympotthastia Non-Biting Midges 2
Anafroptilum Small Minnow Mayfly 2
Allocapnia Small Winter Stonefly 2
Atherix 2
Nigronia Megaloptera (Dark Fishfly) 2
Hydrobaenus Midge 1
Lype Net Tube Caddisfly 1
Chironomini Non-Biting Midge 1
Parachaetocladius Non-Biting Midge 1
Brillia Non-Biting Midges 1
Physa Air-Breathing Freshwater Snail 1
Naididae Aquatic Worm 1
Strophopteryx Early Brown Stonefly 1
Stenonema Flatheaded Mayfly 1
Paratendipes European Non-Biting Midge 1
Paracapnia Small Winter Stonefly 1
Amphinemura Spring Stonefly 1
Ephemerella Sulphur Mayfly 1
Thienemannimyia Group Non-Biting Midges 1
Tribelos Non-Biting Midges 1
Natarsia Non-Biting Midges 1
Dubiraphia Riffle Beetle 1
Optioservus Riffle Beetle 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.