MBSS Site Summary for: NANT-111-R-2002

Site Photos

Field photo showing stream conditions at site NANT-111-R-2002-1 (Opens in a new window) Field photo showing stream conditions at site NANT-111-R-2002-2 (Opens in a new window) Field photo showing stream conditions at site NANT-111-R-2002-3 (Opens in a new window) Field photo showing stream conditions at site NANT-111-R-2002-4 (Opens in a new window)

Located on REWASTICO CR in the Nanticoke River watershed, 8-digit code: 02130305.
This stream was visited in the spring on 3/13/2002 and again in the summer on 6/17/2002.

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 - 2.0 / 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 1,152 acres Cows standing in a stream at a site with high agricultural land use. Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
Urban Land Use 1 %
Agricultural Land Use 79 %
Forested Land Use 18 %


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

Physical Stream Habitat
Instream Habitat 3/20 (Poor)
Epifaunal Substrate 1/20 (Poor)
Velocity/Depth Diversity 3/20 (Poor)
Pool Quality
Pool Extent = 71 meters 		3/20 (Poor)
Riffle Quality
Riffle Extent = 4 meters 		3/20 (Poor)
Shading 92 %
Embeddedness 85 %
The embeddedness, a measure of silt on the stream bottom, was 85%. This is relatively high, and may exclude some biota.
Several measures of instream habitat were considered 'Poor' at this location.


Stream Water Quality:
Water temperature 20.6 ° C
Dissolved oxygen (DO) 4.8 mg/L
Dissolved oxygen levels measured in the stream were very low (4.8 mg/L). Many fishes and other aquatic animals cannot tolerate low levels of oxygen in the water.
pH (lab) 7.41
Conductivity 150 µmho/cm
Alkalinity
(acid neutralizing capacity) 		1671 µeq/L
Dissolved organic carbon (DOC) 8.4 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 3 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 108
American Eel 1
Chain Pickerel 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Fowler's Toad
Northern Green Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Common Reed (Phragmites)
Japanese Honeysuckle
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Crangonyx Amphipod 45
Stygobromus Amphipod 13
Sphaerium Fingernail Clam 7
Caecidotea Isopod 7
Tubificidae Aquatic Worm 6
Lumbriculidae Worm 6
Procladius Non-Biting Midge 4
Menetus Air Breathing Freshwater Snail 4
Physa Air-Breathing Freshwater Snail 3
Conchapelopia Non-Biting Midges 3
Orthocladius Non-Biting Midges 3
Chironomini Non-Biting Midge 3
Phaenopsectra Non-Biting Midges 2
Tanypodinae Non-Biting Midges 2
Ironoquia Northern Caddisfly 1
Crangonyctidae Scud 1
Ferrissia Small Air-Breathing Freshwater Limpets 1
Corixidae Water Boatman 1
Naididae Aquatic Worm 1
Hydrobaenus Midge 1
Orthocladiinae Midge 1
Somatochlora 1
Peltodytes Crawling Water Beetle 1
Chironomus 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.