MBSS Site Summary for: ANAC-110-R-2004

Site Photos

Field photo showing stream conditions at site ANAC-110-R-2004-1 (Opens in a new window) Field photo showing stream conditions at site ANAC-110-R-2004-2 (Opens in a new window)

Located on LITTLE PAINT BR UT1 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 6/8/2004.

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 - 2.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 423 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 65 %
Agricultural Land Use 13 %
Forested Land Use 22 %


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

Physical Stream Habitat
Instream Habitat 16/20 (Optimal)
Epifaunal Substrate 17/20 (Optimal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 36 meters 		11/20 (Suboptimal)
Riffle Quality
Riffle Extent = 50 meters 		13/20 (Suboptimal)
Shading 95 %
Embeddedness 20 %


Stream Water Quality:
Water temperature 17.7 ° C
Dissolved oxygen (DO) 7.9 mg/L
pH (lab) 7.21
Conductivity 223 µmho/cm
Alkalinity
(acid neutralizing capacity) 		661.3 µeq/L
Dissolved organic carbon (DOC) 4 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 85
Longnose Dace 44
American Eel 15
Cutlip Minnow 13
Rosyside Dace 6
Creek Chub 1
Margined Madtom 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog
Northern Ring-Necked Snake
Northern Two-Lined Salamander

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
Cheumatopsyche Net-Spinning Caddisfly 40
Tipula Crane Fly 15
Orthocladius Non-Biting Midges 10
Parametriocnemus Non-Biting Midges 5
Diamesa Bloodworm 4
Antocha Crane Fly 4
Prostoma Freshwater Nemertean (Ribbon Worm) 2
Chaetocladius Non-Biting Midges 2
Sympotthastia Non-Biting Midges 2
Eukiefferiella Non-Biting Midges 2
Zavrelimyia Non-Biting Midges 1
Diptera True Fly 1
Diplocladius Non-Biting Midges 1
Paraphaenocladius Non-Biting Midges 1
Rheosmittia Non-Biting Midges 1
Dicranota Hairy-Eyed Cranefly 1
Diplectrona Net-Spinning Caddisfly 1
Hydropsyche Net-Spinning Caddisfly 1
Brillia 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.