MBSS Site Summary for: EVIT-113-R-2004
Located on EVITTS CR (BRASHIER HOLLOW RUN) UT in the Evitts Creek watershed,
8-digit code: 02141002.
This stream was visited in the spring on 3/4/2004 and again in the summer on 7/13/2004.
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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Poor - 1.8 / 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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201 acres
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An example of a highly channelized urban stream.
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Urban Land Use
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5 %
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Agricultural Land Use
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5 %
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Forested Land Use
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89 %
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Stream Water Quality:
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| Water temperature |
22.7 ° C
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| Dissolved oxygen (DO) |
6 mg/L
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| pH (lab) |
7.53 |
| Conductivity |
170 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
535.6 µeq/L |
| Dissolved organic carbon (DOC) |
2.3 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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The following 2 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Common name |
Count |
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Blacknose Dace
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44 |
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Creek Chub
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10 |
Electrofishing to sample fish communities.
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| 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 |
| Diamesa |
Bloodworm
|
70 |
| Allocapnia |
Small Winter Stonefly
|
13 |
| Diplectrona |
Net-Spinning Caddisfly
|
8 |
| Parametriocnemus |
Non-Biting Midges
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7 |
| Sweltsa |
Stonefly
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4 |
| Thienemannimyia group |
Non-Biting Midges
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3 |
| Paraleptophlebia |
Blue Quill Mayfly
|
2 |
| Lumbriculidae |
Worm
|
2 |
| Simulium |
Black Fly
|
1 |
| Ameletus |
Combmouthed Minnow Mayfly
|
1 |
| Tipula |
Crane Fly
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1 |
| Stenonema |
Flatheaded Mayfly
|
1 |
| Planariidae |
Flatworm
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1 |
| Chloroperlidae |
Green Stonefly
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1 |
| Eurylophella |
Mayfly
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1 |
| Nemouridae |
Nemourid Stonefly
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1 |
| Diplocladius |
Non-Biting Midges
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1 |
| Psephenus |
Water Penny
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1 |
| Amphinemura |
Spring Stonefly
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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.
