MBSS Site Summary for: LMON-121-R-2023

Site Photos

Field photo showing stream conditions at site LMON-121-R-2023_Midpoint_facing_downstream (Opens in a new window) Field photo showing stream conditions at site LMON-121-R-2023_Midpoint_facing_upstream (Opens in a new window)

Located on UT MONOCACY in the Lower Monocacy River watershed, 8-digit code: 02140302.
This stream was visited in the spring on 3/9/2023 and again in the summer on 6/20/2023.

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 - 1.0 / 5.0
Benthic IBI Fair - 3.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area No data available 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 6.4 %
Agricultural Land Use 54.3 %
Forested Land Use 39.3 %


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

Physical Stream Habitat
Instream Habitat 5/20 (Poor)
Epifaunal Substrate 11/20 (Suboptimal)
Velocity/Depth Diversity 2/20 (Poor)
Pool Quality
Pool Extent = 10 meters 		6/20 (Marginal)
Riffle Quality
Riffle Extent = 65 meters 		7/20 (Marginal)
Shading 95 %
Embeddedness 10 %


Stream Water Quality:
Water temperature 17.6 ° C
Dissolved oxygen (DO) 6.79 mg/L
pH (lab) 7.03
Alkalinity
(acid neutralizing capacity) 		224.5 µeq/L
Dissolved organic carbon (DOC) 2.821 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 1 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
No Fish Observed 0
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Eastern American Toad

Crayfish:
Cambarus bartonii

Exotic Plants:
Garlic Mustard
Japanese Stiltgrass
Wineberry
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
LEUCTRA  Rolled-Winged Stonefly 40
THIENEMANNIMYIA GROUP Non-Biting Midges 18
AMELETUS Combmouthed Minnow Mayfly 13
WORMALDIA Fingernet Caddisfly 10
ISOPERLA Stripetail Stonefly 9
OSTROCERCA Stonefly 5
PARAMETRIOCNEMUS Non-Biting Midges 3
CLIOPERLA Green-Winged Stonefly 3
STEGOPTERNA Black Fly 3
TIPULA Crane Fly 2
RHYACOPHILA Free-Living Caddisfly 2
LUMBRICULIDAE Worm 2
DIPHETOR Mayfly 1
DIPLECTRONA Net-Spinning Caddisfly 1
ZAVRELIMYIA Non-Biting Midges 1
BAETIDAE Small Minnow Mayfly 1
NEOPHYLAX Caddisfly 1
PROSIMULIUM Black Fly 1
CERATOPOGON/CULICOIDES/STILOBEZZIA 1
CONSTEMPELLINA 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.