MBSS Site Summary for: ANTI-116-R-2003

Site Photos

Field photo showing stream conditions at site ANTI-116-R-2003-1 (Opens in a new window) Field photo showing stream conditions at site ANTI-116-R-2003-2 (Opens in a new window)

Located on LITTLE ANTIETAM CR (1) UT2 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 Fair - 3.3 / 5.0
Benthic IBI Poor - 2.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 1,246 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 7 %
Agricultural Land Use 43 %
Forested Land Use 51 %


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

Physical Stream Habitat
Instream Habitat 15/20 (Suboptimal)
Epifaunal Substrate 12/20 (Suboptimal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 55 meters 		12/20 (Suboptimal)
Riffle Quality
Riffle Extent = 24 meters 		15/20 (Suboptimal)
Shading 65 %
Embeddedness 35 %


Stream Water Quality:
Water temperature 23.6 ° C
Dissolved oxygen (DO) 7.7 mg/L
pH (lab) 8.1
Conductivity 146 µmho/cm
Alkalinity
(acid neutralizing capacity) 		379 µeq/L
Dissolved organic carbon (DOC) 2.2 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 7 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 212
Creek Chub 34
Fantail Darter 20
Longnose Dace 10
White Sucker 10
Bluegill 5
Pumpkinseed 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Eastern Snapping Turtle
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
Canada Thistle
Japanese Honeysuckle
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Parametriocnemus Non-Biting Midges 39
Diamesa Bloodworm 11
Orthocladius Non-Biting Midges 5
Prosimulium Black Fly 4
Corynoneura Non-Biting Midges 3
Micropsectra Non-Biting Midges 3
Clinocera Aquatic Dance Fly 3
Enchytraeidae Aquatic Worm 3
Thienemanniella Non-Biting Midges 3
Ephemerella Sulphur Mayfly 3
Lumbriculidae Worm 2
Physa Air-Breathing Freshwater Snail 2
Polypedilum Non-Biting Midges 2
Stenelmis Beetle 2
Diamesinae Non-Biting Midges 2
Simuliidae Black Fly 2
Orthocladiinae Midge 2
Stilocladius Midge 1
Stegopterna Black Fly 1
Microtendipes Non-Biting Midges 1
Ceratopogonidae Biting Midge 1
Tubificidae Aquatic Worm 1
Tipula Crane Fly 1
Strophopteryx Early Brown Stonefly 1
Stenonema Flatheaded Mayfly 1
Gordiidae Horsehair Worm 1
Tanypodinae Non-Biting Midges 1
Tanytarsus Non-Biting Midges 1
Zavrelimyia Non-Biting Midges 1
Allocapnia Small Winter 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.