MBSS Site Summary for: NANJ-301-A-2008
Located on WARD'S RUN in the Nanjemoy Creek watershed,
8-digit code: 02140110.
This stream was visited in the spring on 3/12/2008 and again in the summer on 7/22/2008.
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.
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Fish IBI
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Good - 4.0 / 5.0
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Benthic IBI
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Good - 4.7 / 5.0
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Land Use
Land use can provide important information for determining stream health.
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Catchment area
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7,438 acres
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An example of a forested stream.
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Urban Land Use
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2.6 %
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Agricultural Land Use
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14.2 %
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Forested Land Use
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79.9 %
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Stream Water Quality:
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| Water temperature |
23 ° C
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| Dissolved oxygen (DO) |
6 mg/L
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| pH (lab) |
6.38 |
| Conductivity |
68 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
69.5 µeq/L |
| Dissolved organic carbon (DOC) |
4.1382 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.
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| American Bullfrog |
| Eastern American Toad |
| Eastern Box Turtle |
| Eastern Cricket Frog |
| Fowler's Toad |
| Northern Green Frog |
| Northern Two-Lined Salamander |
| Stinkpot |
| Upland Chorus Frog |
| Japanese Honeysuckle |
| Japanese Stiltgrass |
| Multiflora Rose |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Haploperla |
Green Stonefly
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16 |
| Oulimnius |
Riffle Beetle
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13 |
| Cheumatopsyche |
Net-Spinning Caddisfly
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7 |
| Parametriocnemus |
Non-Biting Midges
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6 |
| Isoperla |
Stripetail Stonefly
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6 |
| Maccaffertium |
March Brown And Cahill Mayfly
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6 |
| Hexatoma |
Crane Fly
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6 |
| Stempellina |
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5 |
| Optioservus |
Riffle Beetle
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5 |
| Paraphaenocladius |
Non-Biting Midges
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5 |
| Tanytarsus |
Non-Biting Midges
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4 |
| Psephenus |
Water Penny
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4 |
| Orthocladiinae |
Midge
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2 |
| Strophopteryx |
Early Brown Stonefly
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2 |
| Chimarra |
Fingernet Caddisfly
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2 |
| Prosimulium |
Black Fly
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2 |
| Simulium |
Black Fly
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1 |
| Neophylax |
Caddisfly
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1 |
| Gomphus |
Clubtail Dragonfly
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1 |
| Perlidae |
Common Stonefly
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1 |
| Antocha |
Crane Fly
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1 |
| Rhyacophila |
Free-Living Caddisfly
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1 |
| Lype |
Net Tube Caddisfly
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1 |
| Spirosperma |
Aquatic Oligochaete Worm
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1 |
| Bezzia |
Biting Midge
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1 |
| Eurylophella |
Mayfly
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1 |
| Stenacron |
Mayfly
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1 |
| Acerpenna |
Tiny Blue-Winged Olive Mayflies
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1 |
| Ancyronyx |
Spider Riffle Beetle
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1 |
| Cordulegaster |
Spiketail Dragonfly
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1 |
| Dubiraphia |
Riffle Beetle
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1 |
| Diplectrona |
Net-Spinning Caddisfly
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1 |
| Hydropsyche |
Net-Spinning Caddisfly
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1 |
| Polypedilum |
Non-Biting Midges
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1 |
| Rheotanytarsus |
Non-Biting Midges
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1 |
Sampling with a kick net.
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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.
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