MBSS Site Summary for: ZEKI-305-R-2001

Site Photos

Field photo showing stream conditions at site ZEKI-305-R-2001-100 (Opens in a new window) Field photo showing stream conditions at site ZEKI-305-R-2001-97 (Opens in a new window) Field photo showing stream conditions at site ZEKI-305-R-2001-98 (Opens in a new window)

Located on ZEKIAH SWAMP RUN in the Zekiah Swamp watershed, 8-digit code: 02140108.
This stream was visited in the spring on 3/13/2001 and again in the summer on 8/8/2001.

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

Land Use

Land use can provide important information for determining stream health.
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Catchment area 25,890 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 14 %
Agricultural Land Use 26 %
Forested Land Use 59 %


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

Physical Stream Habitat
Instream Habitat 16/20 (Optimal)
Epifaunal Substrate 15/20 (Suboptimal)
Velocity/Depth Diversity 14/20 (Suboptimal)
Pool Quality
Pool Extent = 70 meters 		15/20 (Suboptimal)
Riffle Quality
Riffle Extent = 20 meters 		14/20 (Suboptimal)
Shading 84 %
Embeddedness 40 %


Stream Water Quality:
Water temperature 23.3 ° C
Dissolved oxygen (DO) 6.1 mg/L
pH (lab) 6.55
Conductivity 110 µmho/cm
Alkalinity
(acid neutralizing capacity) 		72.9 µeq/L
Dissolved organic carbon (DOC) 4.6 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 17 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 123
Fallfish 80
Tessellated Darter 73
Rosyside Dace 69
Creek Chubsucker 67
American Eel 65
Golden Shiner 59
Redfin Pickerel 59
Tadpole Madtom 36
Least Brook Lamprey 31
Bluegill 29
Pumpkinseed 28
Margined Madtom 25
Largemouth Bass 10
Pirate Perch 9
Sea Lamprey 9
Chain Pickerel 6
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Northern Green Frog
Northern Watersnake
Southern Leopard Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Eurylophella Mayfly 11
Tanytarsus Non-Biting Midges 10
Oulimnius Riffle Beetle 10
Acerpenna Tiny Blue-Winged Olive Mayflies 10
Stenonema Flatheaded Mayfly 7
Caecidotea Isopod 6
Leptoceridae Longhorned Casemaker Caddisfly 6
Cricotopus/Orthocladius Midge 6
Isoperla Stripetail Stonefly 5
Parametriocnemus Non-Biting Midges 5
Rheosmittia Non-Biting Midges 4
Stempellinella Non-Biting Midges 4
Cheumatopsyche Net-Spinning Caddisfly 3
Prosimulium Black Fly 3
Tubificidae Aquatic Worm 2
Probezzia Biting Midges 1
Tipula Crane Fly 1
Pycnopsyche Great Autumn Brown Sedge Caddisfly 1
Gordiidae Horsehair Worm 1
Conchapelopia Non-Biting Midges 1
Limnephilidae Northern Casemaker Caddisfly 1
Leptophlebiidae Pronggilled Mayfly 1
Optioservus Riffle Beetle 1
Ferrissia Small Air-Breathing Freshwater Limpets 1
Allocapnia Small Winter Stonefly 1
Ephemerella Sulphur Mayfly 1
Hemerodromia Tiny Fly 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.