MBSS Site Summary for: ANTI-226-R-2003

Site Photos

Field photo showing stream conditions at site ANTI-226-R-2003-1 (Opens in a new window) Field photo showing stream conditions at site ANTI-226-R-2003-4 (Opens in a new window) Field photo showing stream conditions at site ANTI-226-R-2003-2 (Opens in a new window) Field photo showing stream conditions at site ANTI-226-R-2003-5 (Opens in a new window) Field photo showing stream conditions at site ANTI-226-R-2003-3 (Opens in a new window)

Located on LITTLE ANTIETAM CR in the Antietam Creek watershed, 8-digit code: 02140502.
This stream was visited in the spring on 3/17/2003 and again in the summer on 7/15/2003.

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 Poor - 2.7 / 5.0
Benthic IBI Poor - 2.5 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 3,775 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 18 %
Agricultural Land Use 33 %
Forested Land Use 49 %


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 12/20 (Suboptimal)
Velocity/Depth Diversity 15/20 (Suboptimal)
Pool Quality
Pool Extent = 57 meters 		20/20 (Optimal)
Riffle Quality
Riffle Extent = 33 meters 		16/20 (Optimal)
Shading 75 %
Embeddedness 45 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 19.8 ° C
Dissolved oxygen (DO) 6.5 mg/L
pH (lab) 8.71
Conductivity 455 µmho/cm
Alkalinity
(acid neutralizing capacity) 		1288 µeq/L
Dissolved organic carbon (DOC) 2.3 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 7 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Bluntnose Minnow 108
White Sucker 89
Blacknose Dace 36
Yellow Bullhead 18
Bluegill 2
Redbreast Sunfish 2
Fantail Darter 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
No crayfish noted.

Exotic Plants:
Mile-A-Minute
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Stenelmis Beetle 46
Tubificidae Aquatic Worm 16
Cheumatopsyche Net-Spinning Caddisfly 11
Microtendipes Non-Biting Midges 6
Thienemannimyia group Non-Biting Midges 5
Sphaerium Fingernail Clam 4
Optioservus Riffle Beetle 4
Parametriocnemus Non-Biting Midges 3
Polypedilum Non-Biting Midges 2
Tanytarsini Non-Biting Midges 2
Thienemanniella Non-Biting Midges 2
Girardia Freshwater Flatworm 2
Natarsia Non-Biting Midges 1
Tipulidae Cranefly 1
Pericoma 1
Enchytraeidae Aquatic Worm 1
Ephemerella Sulphur Mayfly 1
Psephenus Water Penny 1
Lumbriculidae Worm 1
Planorbidae Ramshorn Snail 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.