MBSS Site Summary for: NASS-302-S-2015
Located on NASSAWANGO CREEK in the Nassawango Creek watershed,
8-digit code: 02130205.
This stream was visited in the spring on 4/7/2015 and again in the summer on 7/15/2015.
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 - 4.7 / 5.0
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Benthic IBI
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Good - 5.0 / 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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19,606 acres
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An example of a forested stream.
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Urban Land Use
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4.9 %
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Agricultural Land Use
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21.9 %
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Forested Land Use
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63.8 %
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An example of woody debris in a stream.
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Physical Stream Habitat
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Instream Habitat
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16/20 (Optimal)
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Epifaunal Substrate
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16/20 (Optimal)
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Velocity/Depth Diversity
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7/20 (Marginal)
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Pool Quality
Pool Extent = 75 meters
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16/20 (Optimal)
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Riffle Quality
Riffle Extent = 0 meters
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0/20 (Poor)
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Shading
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80 % |
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Embeddedness
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100 % |
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The embeddedness, a measure of silt on the stream bottom, was 100%. This is
very high, and may adversely affect biotic communities.
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Several measures of instream habitat were considered 'Optimal' at this location.
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Stream Water Quality:
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| pH (lab) |
6.3 |
Alkalinity
(acid neutralizing capacity)
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226.2 µeq/L |
| Dissolved organic carbon (DOC) |
18.9616 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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| Cope's Gray Treefrog |
| Northern Green Frog |
| Northern Spring Peeper |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Leptophlebia |
Pronggilled Mayfly
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34 |
| Orthocladius |
Non-Biting Midges
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7 |
| Caecidotea |
Isopod
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7 |
| Triaenodes |
Long-Horned Caddisfly
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6 |
| Orthocladiinae |
Midge
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4 |
| Crangonyx |
Amphipod
|
4 |
| Hyalella |
Amphipod
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4 |
| Palaemonetes |
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3 |
| Zalutschia |
Non-Biting Midge
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3 |
| Hydrobiidae |
Pebble Snail
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3 |
| Dubiraphia |
Riffle Beetle
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3 |
| Pisidiidae |
Pill Clam
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2 |
| Neoporous |
Predaceous Diving Beetle
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2 |
| Tanypodinae |
Non-Biting Midges
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2 |
| Thienemannimyia Group |
Non-Biting Midges
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2 |
| Parametriocnemus |
Non-Biting Midges
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2 |
| Menetus |
Air Breathing Freshwater Snail
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2 |
| Sialis |
Alderfly
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1 |
| Erythemis |
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1 |
| Libellula |
|
1 |
| Limonia |
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1 |
| Procladius |
Non-Biting Midge
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1 |
| Eurylophella |
Mayfly
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1 |
| Synurella |
Amphipod
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1 |
| Stegopterna |
Black Fly
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1 |
| Heteroplectron |
Caddisfly
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1 |
| Gomphus |
Clubtail Dragonfly
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1 |
| Peltodytes |
Crawling Water Beetle
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1 |
| Chrysops |
Deerfly
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1 |
| Parakiefferiella |
European Non-Biting Midge
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1 |
| Musculium |
Fingernail Clam
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1 |
| Polypedilum |
Non-Biting Midges
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1 |
| Natarsia |
Non-Biting Midges
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1 |
| Ironoquia |
Northern Caddisfly
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1 |
| Leptophlebiidae |
Pronggilled Mayfly
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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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