MBSS Site Summary for: SEVE-206-X-2017

Site Photos

Field photo showing stream conditions at site SEVE-206-X-2017-MidpointAtPLookingDownstream (Opens in a new window) Field photo showing stream conditions at site SEVE-206-X-2017-MidpointAtPLookingUpstream (Opens in a new window)

Located on Jabez Branch in the Severn River watershed, 8-digit code: 02131002.
This stream was visited in the spring on 4/17/2017 and again in the summer on 6/20/2017.

Located on JABEZ BRANCH in the Severn River watershed, 8-digit code: 2131002.
This stream was visited in the spring on 4/17/2017 and again in the summer on 6/20/2017.

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 - 2.72.7 / 5.0
Benthic IBI Good - 4.14.1 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 2,584 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 35.1 %
Agricultural Land Use 12.5 %
Forested Land Use 50.7 %
Catchment area No data available A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 35.1 %
Agricultural Land Use 12.5 %
Forested Land Use 50.7 %


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

Physical Stream Habitat
Instream Habitat 55/20 (Poor)
Epifaunal Substrate 44/20 (Poor)
Velocity/Depth Diversity 1010/20 (Marginal)
Pool Quality
Pool Extent = 1010 meters 		1010/20 (Marginal)
Riffle Quality
Riffle Extent = 6565 meters 		1212/20 (Suboptimal)
Shading 75 %
Embeddedness 95 %
Shading 75 %
Embeddedness 95 %
The embeddedness, a measure of silt on the stream bottom, was 95%. This is relatively high, and may exclude some biota.


Stream Water Quality:
pH (lab) 6.71
Alkalinity
(acid neutralizing capacity) 		224.6 µeq/L
Dissolved organic carbon (DOC) 3.4725 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 5 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 147
American Eel 25
White Sucker 17
Tessellated Darter 7
Pumpkinseed 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Northern Green Frog
Northern Spring Peeper

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
POLYCENTROPUS Tube Maker Caddisfly 28
LEUCTRIDAE Rolledwinged Stonefly 16
POLYPEDILUM Non-Biting Midges 8
ANCHYTARSUS Beetle 7
LEPTOCERIDAE Longhorned Casemaker Caddisfly 4
RHEOTANYTARSUS Non-Biting Midges 4
BRILLIA Non-Biting Midges 3
AMPHINEMURA Spring Stonefly 3
ACERPENNA Tiny Blue-Winged Olive Mayflies 3
HAPLOPERLA Green Stonefly 3
LUMBRICULIDAE Worm 2
CORDULEGASTER Spiketail Dragonfly 2
BOYERIA Spotted Darner Dragonfly 2
DIPLECTRONA Net-Spinning Caddisfly 2
LABRUNDINIA Non-Biting Midges 2
TANYTARSUS Non-Biting Midges 2
SYNURELLA Amphipod 2
TUBIFICIDAE Aquatic Worm 1
LYPE Net Tube Caddisfly 1
CHEUMATOPSYCHE Net-Spinning Caddisfly 1
SIMULIUM Black Fly 1
TIPULA Crane Fly 1
TIPULIDAE Cranefly 1
CALOPTERYX Damselfly 1
PARAKIEFFERIELLA European Non-Biting Midge 1
ROBACKIA European Non-Biting Midge 1
TVETENIA Non-Biting Midges 1
ZAVRELIMYIA Non-Biting Midges 1
MICROTENDIPES Non-Biting Midges 1
PARAMETRIOCNEMUS Non-Biting Midges 1
PHAENOPSECTRA Non-Biting Midges 1
ABLABESMYIA Non-Biting Midge 1
PARACHAETOCLADIUS Non-Biting Midge 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.