MBSS Site Summary for: NANJ-301-H-2010

Site Photos

Field photo showing stream conditions at site NANJ-301-H-2010-1 (Opens in a new window) Field photo showing stream conditions at site NANJ-301-H-2010-2 (Opens in a new window)

Located on Nanjemoy Creek in the Nanjemoy Creek watershed, 8-digit code: 02140110.
This stream was visited in the spring on 3/22/2010.

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 N R
Benthic IBI Good - 4.4 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 10,417 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 2.2 %
Agricultural Land Use 13.5 %
Forested Land Use 82.1 %


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

Physical Stream Habitat
Instream Habitat not sampled
Epifaunal Substrate not sampled
Velocity/Depth Diversity not sampled
Pool Quality not sampled
Riffle Quality not sampled
Shading not sampled
Embeddedness not sampled


Stream Water Quality:
pH (lab) 6.43
Alkalinity
(acid neutralizing capacity) 		114.9 µeq/L
Dissolved organic carbon (DOC) 10.3915 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:
Fish data is unavailable or no fish observed.

Amphibians and Reptiles:
Northern Green Frog
Northern Spring Peeper

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Prosimulium Black Fly 38
Musculium Fingernail Clam 13
Gammarus Amphipod 8
Capniidae Small Winter Stonefly 6
Acerpenna Tiny Blue-Winged Olive Mayflies 6
Caecidotea Isopod 5
Phylocentropus Caddisfly 4
Bezzia Biting Midge 3
Campeloma 3
Orthocladius Non-Biting Midges 3
Thienemannimyia Group Non-Biting Midges 3
Leptophlebia Pronggilled Mayfly 3
Hexatoma Crane Fly 2
Ablabesmyia Non-Biting Midge 2
Maccaffertium March Brown And Cahill Mayfly 2
Eurylophella Mayfly 2
Argia Narrow-Winged Damselfly 2
Nemouridae Nemourid Stonefly 1
Micropsectra Non-Biting Midges 1
Polypedilum Non-Biting Midges 1
Lumbriculidae Worm 1
Ancyronyx Spider Riffle Beetle 1
Cordulegaster Spiketail Dragonfly 1
Helocordulia 1
Macromia 1
Physa Air-Breathing Freshwater Snail 1
Bithynia 1
Tubificidae Aquatic Worm 1
Perlidae Common Stonefly 1
Chimarra Fingernet Caddisfly 1
Simulium Black Fly 1
Stegopterna Black Fly 1
Neophylax Caddisfly 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.