MBSS Site Summary for: NANT-119-R-2001


Located on UT NANTICOKE R UT1 UT1 in the Nanticoke River watershed, 8-digit code: 02130305.
This stream was visited in the spring on 3/7/2001 and again in the summer on 6/5/2001.

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 - 2.4 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 482 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 41 %
Forested Land Use 57 %


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

Physical Stream Habitat
Instream Habitat 10/20 (Marginal)
Epifaunal Substrate 11/20 (Suboptimal)
Velocity/Depth Diversity 9/20 (Marginal)
Pool Quality
Pool Extent = 75 meters 		12/20 (Suboptimal)
Riffle Quality
Riffle Extent = 0 meters 		0/20 (Poor)
Shading 95 %
Embeddedness 100 %
The embeddedness, a measure of silt on the stream bottom, was 100%. This is very high, and may adversely affect biotic communities.


Stream Water Quality:
Water temperature 15.8 ° C
Dissolved oxygen (DO) 4.5 mg/L
Dissolved oxygen levels measured in the stream were very low (4.5 mg/L). Many fishes and other aquatic animals cannot tolerate low levels of oxygen in the water.
pH (lab) 5.25
Conductivity 60 µmho/cm
Alkalinity
(acid neutralizing capacity) 		22.5 µeq/L
Dissolved organic carbon (DOC) 4.3 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. 		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:
No amphibians and reptiles noted.

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Crangonyx Amphipod 39
Caecidotea Isopod 20
Stictochironomus Non-Biting Midge 17
Lumbriculidae Worm 9
Corynoneura Non-Biting Midges 7
Nemouridae Nemourid Stonefly 3
Limnophyes Non-Biting Midge 3
Stegopterna Black Fly 3
Pseudolimnophila Crane Fly 2
Limnephilidae Northern Casemaker Caddisfly 2
Culicidae Mosquitoe 2
Hydroporus Water Beetle 2
Boyeria Spotted Darner Dragonfly 1
Diplocladius Non-Biting Midges 1
Nanocladius Non-Biting Midges 1
Polypedilum Non-Biting Midges 1
Chauliodes 1
Laccornis 1
Dolichopodidae Long-Legged Fly 1
Hydrobaenus Midge 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.