MBSS Site Summary for: NANJ-119-R-2000

Site Photos

Field photo showing stream conditions at site NANJ-119-R-2000-01 (Opens in a new window) Field photo showing stream conditions at site NANJ-119-R-2000-02 (Opens in a new window)

Located on JANE BERRYS RUN UT1 in the Nanjemoy Creek watershed, 8-digit code: 02140110.
This stream was visited in the spring on 3/8/2000 and again in the summer on 6/20/2000.

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 Fair - 3.9 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 265 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 3.2 %
Forested Land Use 88.8 %


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 16/20 (Optimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = 70 meters 		10/20 (Marginal)
Riffle Quality
Riffle Extent = 15 meters 		13/20 (Suboptimal)
Shading 95 %
Embeddedness 30 %


Stream Water Quality:
Water temperature 19.5 ° C
Dissolved oxygen (DO) 6 mg/L
pH (lab) 5.38
Conductivity 30 µmho/cm
Alkalinity
(acid neutralizing capacity) 		19.4 µeq/L
Dissolved organic carbon (DOC) 3.5 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 1 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 22
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog
Northern Two-Lined Salamander
Pickerel Frog

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Stegopterna Black Fly 48
Leuctra  Rolled-Winged Stonefly 18
Diplectrona Net-Spinning Caddisfly 12
Simulium Black Fly 5
Lumbriculidae Worm 4
Eccoptura Yellow Stone Stonefly 4
Nigronia Megaloptera (Dark Fishfly) 3
Tanytarsus Non-Biting Midges 2
Thienemanniella Non-Biting Midges 1
Zavrelimyia Non-Biting Midges 1
Oulimnius Riffle Beetle 1
Unniella Non-Biting Midge 1
Conchapelopia Non-Biting Midges 1
Corynoneura Non-Biting Midges 1
Cricotopus Non-Biting Midges 1
Eukiefferiella Non-Biting Midges 1
Polypedilum Non-Biting Midges 1
Sialis Alderfly 1
Synurella Amphipod 1
Prosimulium Black Fly 1
Gomphidae Clubtail Dragonfly 1
Hexatoma Crane Fly 1
Isotomurus Elongate-Bodied Springtail 1
Caecidotea Isopod 1
Eurylophella Mayfly 1
Cricotopus/Orthocladius Midge 1
Orthocladiinae Midge 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.