MBSS Site Summary for: ANAC-412-R-2004

Site Photos

Field photo showing stream conditions at site ANAC-412-R-2004-30 (Opens in a new window) Field photo showing stream conditions at site ANAC-412-R-2004-31 (Opens in a new window)

Located on NORTHEAST BR ANACOSTIA R 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 8/18/2004.

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 Good - 4.3 / 5.0
Benthic IBI Fair - 3.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 32,139 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 68 %
Agricultural Land Use 9 %
Forested Land Use 23 %


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

Physical Stream Habitat
Instream Habitat 7/20 (Marginal)
Epifaunal Substrate 8/20 (Marginal)
Velocity/Depth Diversity 12/20 (Suboptimal)
Pool Quality
Pool Extent = 75 meters 		15/20 (Suboptimal)
Riffle Quality
Riffle Extent = 15 meters 		11/20 (Suboptimal)
Shading 25 %
Embeddedness 55 %
The embeddedness, a measure of silt on the stream bottom, was 55%. This is relatively high, and may exclude some biota.


Stream Water Quality:
Water temperature 22.1 ° C
Dissolved oxygen (DO) 8.7 mg/L
pH (lab) 7.47
Conductivity 257 µmho/cm
Alkalinity
(acid neutralizing capacity) 		729.9 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 30 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Spottail Shiner 1319
Tessellated Darter 213
Eastern Silvery Minnow 194
Redbreast Sunfish 187
Swallowtail Shiner 176
Pumpkinseed 152
White Sucker 147
Banded Killifish 135
American Eel 133
American Shad 126
Bluegill 89
Northern Hogsucker 23
Sea Lamprey 21
Green Sunfish 17
Satinfin Shiner 17
Common Shiner 12
Mummichog 12
Yellow Bullhead 11
Bluntnose Minnow 9
Largemouth Bass 9
Gizzard Shad 8
Channel Catfish 7
Silverjaw Minnow 6
Common Carp 3
Golden Redhorse 3
Striped Bass 2
Brown Bullhead 1
Eastern Mosquitofish 1
Fathead Minnow 1
Goldfish 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
No crayfish noted.

Exotic Plants:
Canada Thistle
Mile-A-Minute
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Orthocladius Non-Biting Midges 37
Hydrobaenus Midge 19
Brillia Non-Biting Midges 5
Cheumatopsyche Net-Spinning Caddisfly 4
Hydropsyche Net-Spinning Caddisfly 3
Crangonyx Amphipod 3
Thienemannimyia group Non-Biting Midges 3
Cricotopus Non-Biting Midges 2
Tubificidae Aquatic Worm 2
Tipula Crane Fly 2
Heptageniidae Flathead Mayfly 1
Synurella Amphipod 1
Orthocladiinae Midge 1
Argia Narrow-Winged Damselfly 1
Eukiefferiella Non-Biting Midges 1
Lumbriculidae Worm 1
Saetheria 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.