MBSS Site Summary for: ANAC-313-R-2004

Site Photos

Located on NORTHWEST BR ANACOSTIA R in the Anacostia River watershed, 8-digit code: 02140205.
This stream was visited in the spring on 3/2/2004 and again in the summer on 6/30/2004.

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 - 4.0 / 5.0
Benthic IBI Poor - 1.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 14,477 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 36 %
Agricultural Land Use 34 %
Forested Land Use 27 %


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

Physical Stream Habitat
Instream Habitat 13/20 (Suboptimal)
Epifaunal Substrate 12/20 (Suboptimal)
Velocity/Depth Diversity 15/20 (Suboptimal)
Pool Quality
Pool Extent = 50 meters 		16/20 (Optimal)
Riffle Quality
Riffle Extent = 25 meters 		13/20 (Suboptimal)
Shading 87 %
Embeddedness 35 %


Stream Water Quality:
Water temperature 18.2 ° C
Dissolved oxygen (DO) 7.5 mg/L
pH (lab) 7.78
Conductivity 235 µmho/cm
Alkalinity
(acid neutralizing capacity) 		902.4 µeq/L
Dissolved organic carbon (DOC) 2.7 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 21 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Bluntnose Minnow 192
Swallowtail Shiner 91
White Sucker 82
Spottail Shiner 76
Tessellated Darter 49
Silverjaw Minnow 44
Blacknose Dace 26
Common Shiner 26
Satinfin Shiner 20
Longnose Dace 17
Northern Hogsucker 8
Redbreast Sunfish 8
Creek Chub 7
Fantail Darter 6
Bluegill 3
Pumpkinseed 3
Cutlip Minnow 2
Largemouth Bass 2
Margined Madtom 2
Eastern Mosquitofish 1
Rainbow Trout 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Eastern American Toad
Eastern Box Turtle
Northern Green Frog
Northern Spring Peeper
Northern Two-Lined Salamander
Wood Frog

Crayfish:
Cambaridae

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
Hydrobaenus Midge 44
Orthocladius Non-Biting Midges 12
Tvetenia Non-Biting Midges 11
Thienemannimyia group Non-Biting Midges 7
Rheosmittia Non-Biting Midges 6
Cheumatopsyche Net-Spinning Caddisfly 5
Crangonyx Amphipod 4
Eukiefferiella Non-Biting Midges 4
Parametriocnemus Non-Biting Midges 3
Nanocladius Non-Biting Midges 2
Sympotthastia Non-Biting Midges 2
Lumbriculidae Worm 2
Somatochlora 1
Microtendipes Non-Biting Midges 1
Argia Narrow-Winged Damselfly 1
Tubificidae Aquatic Worm 1
Tipula Crane Fly 1
Calopteryx Damselfly 1
Stenonema Flatheaded Mayfly 1
Hydropsyche Net-Spinning Caddisfly 1
Ablabesmyia Non-Biting Midge 1
Corynoneura Non-Biting Midges 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.