MBSS Site Summary for: LOPC-106-R-2009

Site Photos

Field photo showing stream conditions at site LOPC-106-R-2009-1 (Opens in a new window) Field photo showing stream conditions at site LOPC-106-R-2009-2 (Opens in a new window)

Located on Little Mill Creek in the Lower Pocomoke River watershed, 8-digit code: 02130202.
This stream was visited in the spring on 3/16/2009 and again in the summer on 6/23/2009.

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.
Fish IBI Poor - 2.3 / 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 618 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0.7 %
Agricultural Land Use 39.1 %
Forested Land Use 57.9 %


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

Physical Stream Habitat
Instream Habitat 6/20 (Marginal)
Epifaunal Substrate 8/20 (Marginal)
Velocity/Depth Diversity 3/20 (Poor)
Pool Quality
Pool Extent = 75 meters 		7/20 (Marginal)
Riffle Quality
Riffle Extent = 0 meters 		0/20 (Poor)
Shading 85 %
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 21.6 ° C
Dissolved oxygen (DO) 4.3 mg/L
Dissolved oxygen levels measured in the stream were very low (4.3 mg/L). Many fishes and other aquatic animals cannot tolerate low levels of oxygen in the water.
pH (lab) 5.83
Conductivity 143 µmho/cm
Alkalinity
(acid neutralizing capacity) 		168.9 µeq/L
Dissolved organic carbon (DOC) 14.6779 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 4 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Pumpkinseed 2
Eastern Mudminnow 1
Golden Shiner 1
Redfin Pickerel 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
New Jersey Chorus Frog
Northern Green Frog
Southern Leopard Frog

Crayfish:
Procambarus clarkii

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Tubificidae Aquatic Worm 22
Lumbriculidae Worm 22
Caecidotea Isopod 21
Ironoquia Northern Caddisfly 12
Limnodrilus Worm 3
Musculium Fingernail Clam 3
Pycnopsyche Great Autumn Brown Sedge Caddisfly 3
Crangonyx Amphipod 3
Menetus Air Breathing Freshwater Snail 2
Dytiscidae Predaceous Diving Beetle 2
Hydrobaenus Midge 2
Tribelos Non-Biting Midges 1
Neoporus 1
Synurella Amphipod 1
Gordiidae Horsehair Worm 1
Girardia Freshwater Flatworm 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.