MBSS Site Summary for: ANTI-107-R-2003

Site Photos

Field photo showing stream conditions at site ANTI-107-R-2003-1 (Opens in a new window) Field photo showing stream conditions at site ANTI-107-R-2003-4 (Opens in a new window) Field photo showing stream conditions at site ANTI-107-R-2003-2 (Opens in a new window) Field photo showing stream conditions at site ANTI-107-R-2003-5 (Opens in a new window) Field photo showing stream conditions at site ANTI-107-R-2003-3 (Opens in a new window)

Located on FALLS CR in the Antietam Creek watershed, 8-digit code: 02140502.
This stream was visited in the spring on 3/4/2003 and again in the summer on 6/30/2003.

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 - 2.5 / 5.0
Benthic IBI Poor - 1.5 / 5.0

Land Use

Land use can provide important information for determining stream health.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
Catchment area 1,804 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 25 %
Agricultural Land Use 9 %
Forested Land Use 66 %


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

Physical Stream Habitat
Instream Habitat 20/20 (Optimal)
Epifaunal Substrate 18/20 (Optimal)
Velocity/Depth Diversity 17/20 (Optimal)
Pool Quality
Pool Extent = 32 meters 		20/20 (Optimal)
Riffle Quality
Riffle Extent = 58 meters 		18/20 (Optimal)
Shading 93 %
Embeddedness 30 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 21.1 ° C
Dissolved oxygen (DO) 8 mg/L
pH (lab) 7.83
Conductivity 276 µmho/cm
Alkalinity
(acid neutralizing capacity) 		976.1 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 4 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 50
Brown Trout 23
Bluegill 13
Longnose Dace 12
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Dusky Salamander
Northern Red Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Stiltgrass
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Parametriocnemus Non-Biting Midges 27
Hydropsyche Net-Spinning Caddisfly 17
Thienemannimyia group Non-Biting Midges 13
Lumbriculidae Worm 7
Crangonyx Amphipod 7
Cheumatopsyche Net-Spinning Caddisfly 6
Rheosmittia Non-Biting Midges 3
Diplocladius Non-Biting Midges 3
Hydropsychidae Common Netspinner Caddisfly 3
Antocha Crane Fly 2
Prosimulium Black Fly 2
Enchytraeidae Aquatic Worm 2
Naididae Aquatic Worm 2
Orthocladius Non-Biting Midges 2
Ceratopogonidae Biting Midge 1
Stegopterna Black Fly 1
Tipula Crane Fly 1
Micropsectra Non-Biting Midges 1
Limonia 1
Chironomini Non-Biting Midge 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.