MBSS Site Summary for: NASS-108-S-2012

Site Photos

Field photo showing stream conditions at site NASS-108-S-2012-MidpointPdownstream (Opens in a new window) Field photo showing stream conditions at site NASS-108-S-2012-MidpointPupstream (Opens in a new window)

Located on MILLVILLE CREEK in the Nassawango Creek watershed, 8-digit code: 02130205.
This stream was visited in the spring on 3/13/2012 and again in the summer on 6/11/2012.

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.
Fish IBI Poor - 1.0 / 5.0
Benthic IBI Poor - 2.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 2,848 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 1.1 %
Agricultural Land Use 17.2 %
Forested Land Use 75.1 %


Stream showing woody debris, logs, and rocky substrate.
An example of woody debris in a stream.

Physical Stream Habitat
Instream Habitat 0/20 (Poor)
Epifaunal Substrate 0/20 (Poor)
Velocity/Depth Diversity 0/20 (Poor)
Pool Quality
Pool Extent = 0 meters 		0/20 (Poor)
Riffle Quality
Riffle Extent = 0 meters 		0/20 (Poor)
Shading 95 %
Embeddedness 0 %
Several measures of instream habitat were considered 'Poor' at this location.


Stream Water Quality:
pH (lab) 4.31
Alkalinity
(acid neutralizing capacity) 		-75.99633 µeq/L
Dissolved organic carbon (DOC) 39.048 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. 		Close-up of a mayfly indicator species.

Fish Survey Results:
The following 1 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
No Fish Observed 0
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Stiltgrass
Mile-A-Minute
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Caecidotea Isopod 44
Tvetenia Non-Biting Midges 21
Zalutschia Non-Biting Midge 11
Polypedilum Non-Biting Midges 10
NEMOURIDAE Nemourid Stonefly 9
Crangonyx Amphipod 4
Bezzia Biting Midge 3
Stegopterna Black Fly 3
Neoporus 3
Phaenopsectra Non-Biting Midges 3
Orthocladiinae Midge 2
Synurella Amphipod 2
Ostrocerca Stonefly 2
Hydrobius Water Scavenger Beetle 1
Amphinemura Spring Stonefly 1
Thienemannimyia Group Non-Biting Midges 1
Corynoneura Non-Biting Midges 1
Kick net sampling for macroinvertebrates.
Sampling with a kick net.

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.