MBSS Site Summary for: OCTO-212-R-2009
Located on Basin Run in the Octoraro Creek watershed,
8-digit code: 02120203.
This stream was visited in the spring on 3/25/2009 and again in the summer on 6/9/2009.
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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Fair - 3.3 / 5.0
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Benthic IBI
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Fair - 3.0 / 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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3,248 acres
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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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3.2 %
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Agricultural Land Use
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74.5 %
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Forested Land Use
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20.8 %
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Stream Water Quality:
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| Water temperature |
18.8 ° C
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| Dissolved oxygen (DO) |
7.4 mg/L
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| pH (lab) |
7.36 |
| Conductivity |
222 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
715.5 µeq/L |
| Dissolved organic carbon (DOC) |
1.1879 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 American Toad |
| Gray Treefrog |
| Northern Green Frog |
| Northern Two-Lined Salamander |
| Cambarus bartonii bartonii |
| Garlic Mustard |
| Japanese Barberry |
| Japanese Honeysuckle |
| Japanese Stiltgrass |
| Mile-A-Minute |
| Multiflora Rose |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Orthocladius |
Non-Biting Midges
|
21 |
| Cheumatopsyche |
Net-Spinning Caddisfly
|
8 |
| Hydrobaenus |
Midge
|
7 |
| Orthocladiinae |
Midge
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7 |
| Chimarra |
Fingernet Caddisfly
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6 |
| Tvetenia |
Non-Biting Midges
|
5 |
| Ephemerella |
Sulphur Mayfly
|
5 |
| Optioservus |
Riffle Beetle
|
4 |
| Stenelmis |
Beetle
|
4 |
| Antocha |
Crane Fly
|
3 |
| Ablabesmyia |
Non-Biting Midge
|
3 |
| Thienemanniella |
Non-Biting Midges
|
3 |
| Thienemannimyia Group |
Non-Biting Midges
|
3 |
| Eurylophella |
Mayfly
|
3 |
| Rheocricotopus |
Non-Biting Midges
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2 |
| Argia |
Narrow-Winged Damselfly
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2 |
| Hydropsyche |
Net-Spinning Caddisfly
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2 |
| Ceratopsyche |
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2 |
| Menetus |
Air Breathing Freshwater Snail
|
1 |
| Naididae |
Aquatic Worm
|
1 |
| Prosimulium |
Black Fly
|
1 |
| Diamesa |
Bloodworm
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1 |
| Sphaerium |
Fingernail Clam
|
1 |
| Ptilostomis |
Giant Casemaker Caddisfly
|
1 |
| Maccaffertium |
March Brown And Cahill Mayfly
|
1 |
| Dicrotendipes |
Non-Biting Midges
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1 |
| Parametriocnemus |
Non-Biting Midges
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1 |
| Rheotanytarsus |
Non-Biting Midges
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1 |
| Tanytarsus |
Non-Biting Midges
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1 |
| Amphinemura |
Spring Stonefly
|
1 |
| Dubiraphia |
Riffle Beetle
|
1 |
| Hemerodromia |
Tiny Fly
|
1 |
| Polycentropus |
Tube Maker Caddisfly
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1 |
| Psephenus |
Water Penny
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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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