MBSS Site Summary for: PRLT-104-R-2004
Located on POTOMAC R UT 29 in the Potomac River L tidal watershed,
8-digit code: 02140101.
This stream was visited in the spring on 3/11/2004 and again in the summer on 6/22/2004.
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.
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Fish IBI
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Poor - 2.0 / 5.0
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Benthic IBI
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Good - 4.1 / 5.0
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Land Use
Land use can provide important information for determining stream health.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
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Catchment area
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589 acres
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An example of a forested stream.
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Urban Land Use
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0 %
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Agricultural Land Use
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34 %
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Forested Land Use
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64 %
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Stream Water Quality:
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| Water temperature |
20.1 ° C
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| Dissolved oxygen (DO) |
7.9 mg/L
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| pH (lab) |
6.8 |
| Conductivity |
112 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
202.3 µeq/L |
| Dissolved organic carbon (DOC) |
2.2 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.
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| Common Five-Lined Skink |
| Eastern Box Turtle |
| Fowler's Toad |
| Northern Two-Lined Salamander |
| Southern Leopard Frog |
| Japanese Honeysuckle |
| Japanese Stiltgrass |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Gammarus |
Amphipod
|
21 |
| Parametriocnemus |
Non-Biting Midges
|
20 |
| Orthocladius |
Non-Biting Midges
|
12 |
| Thienemannimyia group |
Non-Biting Midges
|
9 |
| Allocapnia |
Small Winter Stonefly
|
7 |
| Crangonyx |
Amphipod
|
7 |
| Caecidotea |
Isopod
|
5 |
| Diplocladius |
Non-Biting Midges
|
5 |
| Polypedilum |
Non-Biting Midges
|
5 |
| Limnephilidae |
Northern Casemaker Caddisfly
|
4 |
| Hydrobaenus |
Midge
|
4 |
| Diplectrona |
Net-Spinning Caddisfly
|
3 |
| Chaoborus |
|
3 |
| Synurella |
Amphipod
|
3 |
| Zavrelimyia |
Non-Biting Midges
|
3 |
| Amphinemura |
Spring Stonefly
|
3 |
| Chloroperlidae |
Green Stonefly
|
3 |
| Cordulegaster |
Spiketail Dragonfly
|
2 |
| Ironoquia |
Northern Caddisfly
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2 |
| Siphlonuridae |
Primitive Minnow Mayfly
|
2 |
| Leptophlebiidae |
Pronggilled Mayfly
|
2 |
| Tipula |
Crane Fly
|
2 |
| Thienemanniella |
Non-Biting Midges
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2 |
| Tipulidae |
Cranefly
|
1 |
| Calopteryx |
Damselfly
|
1 |
| Corynoneura |
Non-Biting Midges
|
1 |
| Enallagma |
Narrow-Winged Damselfly
|
1 |
| Cheumatopsyche |
Net-Spinning Caddisfly
|
1 |
| Prosimulium |
Black Fly
|
1 |
| Pseudolimnophila |
Crane Fly
|
1 |
| Pseudosuccinea |
Air Breathing Freshwater Snail
|
1 |
| Aquarius |
|
1 |
| Lumbriculidae |
Worm
|
1 |
| Eccoptura |
Yellow Stone Stonefly
|
1 |
| Micropsectra |
Non-Biting Midges
|
1 |
| Rheosmittia |
Non-Biting Midges
|
1 |
| Tanypodinae |
Non-Biting Midges
|
1 |
| Paraphaenocladius |
Non-Biting Midges
|
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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