MBSS Site Summary for: ANAC-203-R-2004

Site Photos

Field photo showing stream conditions at site ANAC-203-R-2004-3 (Opens in a new window) Field photo showing stream conditions at site ANAC-203-R-2004-4 (Opens in a new window)

Located on LITTLE PAINT BR 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 6/28/2004.

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 - 2.1 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 3,908 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 51 %
Agricultural Land Use 16 %
Forested Land Use 31 %


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

Physical Stream Habitat
Instream Habitat 10/20 (Marginal)
Epifaunal Substrate 6/20 (Marginal)
Velocity/Depth Diversity 8/20 (Marginal)
Pool Quality
Pool Extent = 45 meters 		10/20 (Marginal)
Riffle Quality
Riffle Extent = 30 meters 		8/20 (Marginal)
Shading 90 %
Embeddedness 100 %
The embeddedness, a measure of silt on the stream bottom, was 100%. This is very high, and may adversely affect biotic communities.


Stream Water Quality:
Water temperature 18.6 ° C
Dissolved oxygen (DO) 7.4 mg/L
pH (lab) 7.28
Conductivity 238 µmho/cm
Alkalinity
(acid neutralizing capacity) 		586.6 µeq/L
Dissolved organic carbon (DOC) 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 16 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 195
Longnose Dace 138
Cutlip Minnow 56
Common Shiner 38
White Sucker 31
American Eel 27
Swallowtail Shiner 23
Fallfish 20
Rosyside Dace 17
Tessellated Darter 12
Creek Chub 8
Satinfin Shiner 6
Redbreast Sunfish 5
Spottail Shiner 3
Northern Hogsucker 2
Margined Madtom 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Northern Green Frog
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

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

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Crangonyx Amphipod 66
Cheumatopsyche Net-Spinning Caddisfly 20
Hydropsyche Net-Spinning Caddisfly 9
Lumbriculidae Worm 8
Hydrobaenus Midge 6
Calopteryx Damselfly 5
Synurella Amphipod 4
Thienemannimyia group Non-Biting Midges 3
Zavrelimyia Non-Biting Midges 3
Tvetenia Non-Biting Midges 2
Parametriocnemus Non-Biting Midges 2
Rheosmittia Non-Biting Midges 2
Oemopteryx Stonefly 2
Diptera True Fly 1
Potthastia Non-Biting Midges 1
Boyeria Spotted Darner Dragonfly 1
Gomphidae Clubtail Dragonfly 1
Tipula Crane Fly 1
Heterotrissocladius European Non-Biting Midge 1
Ptilostomis Giant Casemaker Caddisfly 1
Hydrochus 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.