MBSS Site Summary for: ZEKI-204-X-2011

Site Photos

Field photo showing stream conditions at site ZEKI-204-X-2011-1 (Opens in a new window) Field photo showing stream conditions at site ZEKI-204-X-2011-2 (Opens in a new window)

Located on MILL DAM RUN in the Zekiah Swamp watershed, 8-digit code: 02140108.
This stream was visited in the spring on 3/14/2011 and again in the summer on 6/27/2011.

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 Good - 5.0 / 5.0
Benthic IBI Good - 4.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 3,115 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 9.3 %
Agricultural Land Use 22.3 %
Forested Land Use 63.7 %


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

Physical Stream Habitat

Instream Habitat 17/20 (Optimal)
Epifaunal Substrate 12/20 (Suboptimal)
Velocity/Depth Diversity 13/20 (Suboptimal)
Pool Quality
Pool Extent = 72 meters
18/20 (Optimal)
Riffle Quality
Riffle Extent = 3 meters
6/20 (Marginal)
Shading 50 %
Embeddedness 50 %


Stream Water Quality:

pH (lab) 6.515
Alkalinity
(acid neutralizing capacity)
96.9 µeq/L
Dissolved organic carbon (DOC) 4.6512 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 14 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Least Brook Lamprey 72
Eastern Mudminnow 49
Creek Chubsucker 36
Bluegill 34
Fallfish 24
Pumpkinseed 23
American Eel 12
Rosyside Dace 11
Golden Shiner 7
Redfin Pickerel 7
Tadpole Madtom 2
Tessellated Darter 2
Chain Pickerel 1
Largemouth Bass 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:

Northern Spring Peeper
Northern Water Snake

Crayfish:

Orconectes limosus
Procambarus clarkii

Exotic Plants:

Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:

Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Isoperla Stripetail Stonefly 21
Acerpenna Tiny Blue-Winged Olive Mayflies 12
Maccaffertium March Brown And Cahill Mayfly 10
Prosimulium Black Fly 9
Ephemerella Sulphur Mayfly 8
Orthocladius Non-Biting Midges 7
Diplocladius Non-Biting Midges 4
Cheumatopsyche Net-Spinning Caddisfly 3
TUBIFICIDAE Aquatic Worm 2
Thienemannimyia Group Non-Biting Midges 2
Clioperla Green-Winged Stonefly 2
Ancyronyx Spider Riffle Beetle 2
Stegopterna Black Fly 2
Campeloma 2
Strophopteryx Early Brown Stonefly 2
Wormaldia Fingernet Caddisfly 1
Ptilostomis Giant Casemaker Caddisfly 1
Siphlonurus Gray Drake Mayfly 1
Pycnopsyche Great Autumn Brown Sedge Caddisfly 1
Orthocladiinae Midge 1
Argia Narrow-Winged Damselfly 1
Lype Net Tube Caddisfly 1
Leuctra  Rolled-Winged Stonefly 1
Crangonyx Amphipod 1
Chelifera Aquatic Dance Fly 1
Siphloplecton Cleftfooted Minnow Mayfly 1
GOMPHIDAE Clubtail Dragonfly 1
PERLIDAE Common Stonefly 1
Tipula Crane Fly 1
Chrysops Deerfly 1
Zavrelimyia Non-Biting Midges 1
LIMNEPHILIDAE Northern Casemaker Caddisfly 1
Labrundinia Non-Biting Midges 1
Micropsectra Non-Biting Midges 1
Ceratopogon Biting Midge 1
Diplectrona Net-Spinning Caddisfly 1
Brillia Non-Biting Midges 1
Parametriocnemus Non-Biting Midges 1
Paratanytarsus Non-Biting Midges 1
Rheotanytarsus Non-Biting Midges 1
Eccoptura Yellow Stone Stonefly 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.