MBSS Site Summary for: ANAC-102-R-2004

Site Photos

Field photo showing stream conditions at site ANAC-102-R-2004-40 (Opens in a new window) Field photo showing stream conditions at site ANAC-102-R-2004-41 (Opens in a new window)

Located on BEAVERDAM CR UT in the Anacostia River watershed, 8-digit code: 02140205.
This stream was visited in the spring on 3/4/2004 and again in the summer on 6/7/2004.

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 - 1.9 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 679 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 54 %
Agricultural Land Use 6 %
Forested Land Use 39 %


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

Physical Stream Habitat
Instream Habitat 6/20 (Marginal)
Epifaunal Substrate 6/20 (Marginal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = 50 meters 		10/20 (Marginal)
Riffle Quality
Riffle Extent = 25 meters 		6/20 (Marginal)
Shading 70 %
Embeddedness 50 %


Stream Water Quality:
Water temperature 17 ° C
Dissolved oxygen (DO) 7 mg/L
pH (lab) 7.16
Conductivity 585 µmho/cm
Alkalinity
(acid neutralizing capacity) 		624 µeq/L
Dissolved organic carbon (DOC) 4.3 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 12 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 58
Eastern Mudminnow 9
Swallowtail Shiner 4
American Eel 2
Bluegill 2
Creek Chub 2
Golden Shiner 2
Green Sunfish 2
Tessellated Darter 2
White Sucker 2
Largemouth Bass 1
Yellow Bullhead 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog
Pickerel Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
Mile-A-Minute
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Eukiefferiella Non-Biting Midges 63
Orthocladius Non-Biting Midges 53
Tanytarsini Non-Biting Midges 4
Thienemannimyia group Non-Biting Midges 3
Zavrelimyia Non-Biting Midges 3
Ironoquia Northern Caddisfly 3
Hydropsyche Net-Spinning Caddisfly 3
Calopteryx Damselfly 3
Orthocladiinae Midge 3
Caecidotea Isopod 2
Nemouridae Nemourid Stonefly 2
Parametriocnemus Non-Biting Midges 2
Libellulidae Skimmer Dragonfly 1
Limnodrilus Worm 1
Lumbriculidae Worm 1
Coenagrionidae Narrowwinged Damselfly 1
Parakiefferiella European Non-Biting Midge 1
Hyalella Amphipod 1
Tubificidae Aquatic Worm 1
Stegopterna Black Fly 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.