MBSS Site Summary for: MATT-110-A-2009

Site Photos

Field photo showing stream conditions at site MATT-110-A-2009-1 (Opens in a new window) Field photo showing stream conditions at site MATT-110-A-2009-2 (Opens in a new window)

Located on ut old woman's creek in the Mattawoman Creek watershed, 8-digit code: 02140111.
This stream was visited in the spring on 4/13/2009 and again in the summer on 6/17/2009.

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 - 1.0 / 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 120 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 2.2 %
Agricultural Land Use 8.4 %
Forested Land Use 89.4 %


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 8/20 (Marginal)
Pool Quality
Pool Extent = 65 meters 		9/20 (Marginal)
Riffle Quality
Riffle Extent = 13 meters 		11/20 (Suboptimal)
Shading 85 %
Embeddedness 40 %


Stream Water Quality:
Water temperature 18 ° C
Dissolved oxygen (DO) 8.5 mg/L
pH (lab) 5.83
Conductivity 70 µmho/cm
Alkalinity
(acid neutralizing capacity) 		50.5 µeq/L
Dissolved organic carbon (DOC) 2.2638 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 4 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 21
Green Sunfish 4
Creek Chub 1
Eastern Mudminnow 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Eastern Box Turtle
Northern Green Frog

Crayfish:
Cambarus diogenes

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Amphinemura Spring Stonefly 29
Crangonyctidae Scud 23
Rheocricotopus Non-Biting Midges 23
Leuctridae Rolledwinged Stonefly 8
Caecidotea Isopod 6
Parametriocnemus Non-Biting Midges 6
Simulium Black Fly 5
Leuctra  Rolled-Winged Stonefly 4
Stegopterna Black Fly 3
Cricotopus Non-Biting Midges 3
Thienemannimyia Group Non-Biting Midges 2
Naididae Aquatic Worm 2
Tubificidae Aquatic Worm 1
Crangonyx Amphipod 1
Tipulidae Cranefly 1
Rhyacophila Free-Living Caddisfly 1
Tabanidae Horse Fly 1
Tanypodinae Non-Biting Midges 1
Nemouridae Nemourid Stonefly 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.