MBSS Site Summary for: BRIG-319-R-2017
Located on Patuxent River in the Brighton Dam watershed,
8-digit code: 02131108.
This stream was visited in the spring on 3/21/2017 and again in the summer on 7/12/2017.
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
|
Fair - 3.7 / 5.0
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Benthic IBI
|
Good - 4.0 / 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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19,583 acres
|
Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
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Urban Land Use
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7 %
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Agricultural Land Use
|
49.4 %
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Forested Land Use
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40.8 %
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Stream Water Quality:
|
| pH (lab) |
7.24 |
Alkalinity
(acid neutralizing capacity)
|
317.7 µeq/L |
| Dissolved organic carbon (DOC) |
1.2706 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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 |
| Eastern Painted Turtle |
| Wood Frog |
| English Ivy |
| Garlic Mustard |
| Japanese Honeysuckle |
| Japanese Stiltgrass |
| Multiflora Rose |
| Privet |
|
|
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| ORTHOCLADIUS |
Non-Biting Midges
|
10 |
| PROSTOIA |
Spring Stonefly
|
8 |
| AMELETUS |
Combmouthed Minnow Mayfly
|
8 |
| CHEUMATOPSYCHE |
Net-Spinning Caddisfly
|
8 |
| SIPHLONURUS |
Gray Drake Mayfly
|
7 |
| CRANGONYX |
Amphipod
|
6 |
| MACCAFFERTIUM |
March Brown And Cahill Mayfly
|
5 |
| MICROTENDIPES |
Non-Biting Midges
|
5 |
| TANYTARSUS |
Non-Biting Midges
|
5 |
| ORTHOCLADIINAE |
Midge
|
4 |
| HYDROBAENUS |
Midge
|
3 |
| THIENEMANNIMYIA GROUP |
Non-Biting Midges
|
3 |
| ISONYCHIA |
Slate Drake Mayfly
|
3 |
| AMPHINEMURA |
Spring Stonefly
|
2 |
| EPHEMERELLA |
Sulphur Mayfly
|
2 |
| TRIBELOS |
Non-Biting Midges
|
2 |
| DICRANOTA |
Hairy-Eyed Cranefly
|
2 |
| ABLABESMYIA |
Non-Biting Midge
|
2 |
| PARACLADOPELMA |
Non-Biting Midge
|
2 |
| PHYSA |
Air-Breathing Freshwater Snail
|
2 |
| ANTOCHA |
Crane Fly
|
2 |
| STROPHOPTERYX |
Early Brown Stonefly
|
1 |
| PYCNOPSYCHE |
Great Autumn Brown Sedge Caddisfly
|
1 |
| CLIOPERLA |
Green-Winged Stonefly
|
1 |
| MENETUS |
Air Breathing Freshwater Snail
|
1 |
| CLINOCERA |
Aquatic Dance Fly
|
1 |
| SIMULIUM |
Black Fly
|
1 |
| CORYNONEURA |
Non-Biting Midges
|
1 |
| EUKIEFFERIELLA |
Non-Biting Midges
|
1 |
| CAECIDOTEA |
Isopod
|
1 |
| LEPTOCERIDAE |
Longhorned Casemaker Caddisfly
|
1 |
| STENACRON |
Mayfly
|
1 |
| LEPTOPHLEBIIDAE |
Pronggilled Mayfly
|
1 |
| MACRONYCHUS |
Riffle Beetle
|
1 |
| OPTIOSERVUS |
Riffle Beetle
|
1 |
| POLYPEDILUM |
Non-Biting Midges
|
1 |
| POTTHASTIA |
Non-Biting Midges
|
1 |
| ACERPENNA |
Tiny Blue-Winged Olive Mayflies
|
1 |
| FERRISSIA |
Small Air-Breathing Freshwater Limpets
|
1 |
| EPHEMERELLIDAE |
Spiny Crawler Mayfly
|
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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