MBSS Site Summary for: CATO-301-R-2017

Site Photos

Field photo showing stream conditions at site CATO-301-R-2017-MidpointDownstream (Opens in a new window) Field photo showing stream conditions at site CATO-301-R-2017-MidpointUpstream (Opens in a new window)

Located on Catoctin Creek in the Catoctin Creek watershed, 8-digit code: 02140305.
This stream was visited in the spring on 3/15/2017 and again in the summer on 7/27/2017.

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 Good - 4.0 / 5.0
Benthic IBI Fair - 3.5 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 21,992 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 7.3 %
Agricultural Land Use 30.2 %
Forested Land Use 62.3 %


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

Physical Stream Habitat

Instream Habitat 11/20 (Suboptimal)
Epifaunal Substrate 9/20 (Marginal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 75 meters
15/20 (Suboptimal)
Riffle Quality
Riffle Extent = 5 meters
6/20 (Marginal)
Shading 80 %
Embeddedness 85 %
The embeddedness, a measure of silt on the stream bottom, was 85%. This is relatively high, and may exclude some biota.


Stream Water Quality:

pH (lab) 7.57
Alkalinity
(acid neutralizing capacity)
610 µeq/L
Dissolved organic carbon (DOC) 1.4494 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 24 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
White Sucker 82
Redbreast Sunfish 72
Bluntnose Minnow 64
Cyprinella Sp. 44
Nocomis Sp. 41
Bluegill 31
Fallfish 28
Common Shiner 25
Rock Bass 24
Silverjaw Minnow 23
Smallmouth Bass 21
Northern Hogsucker 17
Golden Redhorse 10
Greenside Darter 8
Potomac Sculpin 8
Swallowtail Shiner 8
Spottail Shiner 7
Rosyface Shiner 5
Yellow Bullhead 4
Creek Chub 3
Fantail Darter 2
Central Stoneroller 1
Green Sunfish 1
Largemouth Bass 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:

No amphibians and reptiles noted.

Crayfish:

Orconectes virilis

Exotic Plants:

Garlic Mustard
Japanese Barberry
Japanese Honeysuckle
Japanese Stiltgrass
Mile-A-Minute
Multiflora Rose
Tree Of Heaven
Wineberry
 

Benthic Macroinvertebrates:

Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
HYALELLA Amphipod 38
ABLABESMYIA Non-Biting Midge 8
EPHEMERELLA Sulphur Mayfly 8
DIAMESA Bloodworm 7
HYDROBAENUS Midge 6
DUBIRAPHIA Riffle Beetle 6
OPTIOSERVUS Riffle Beetle 4
CORYNONEURA Non-Biting Midges 4
CORIXIDAE Water Boatman 3
FERRISSIA Small Air-Breathing Freshwater Limpets 3
MACCAFFERTIUM March Brown And Cahill Mayfly 3
CLINOTANYPUS Non-Biting Midge 2
MENETUS Air Breathing Freshwater Snail 2
CRANGONYX Amphipod 2
ANAFROPTILUM Small Minnow Mayfly 2
ORTHOCLADIUS Non-Biting Midges 2
DICROTENDIPES Non-Biting Midges 2
ANCYRONYX Spider Riffle Beetle 2
EUKIEFFERIELLA Non-Biting Midges 1
LUMBRICULIDAE Worm 1
POLYCENTROPUS Tube Maker Caddisfly 1
PARATANYTARSUS Non-Biting Midges 1
PHAENOPSECTRA Non-Biting Midges 1
RHEOCRICOTOPUS Non-Biting Midges 1
CAPNIIDAE Small Winter Stonefly 1
NYCTIOPHYLAX 1
PHYSA Air-Breathing Freshwater Snail 1
NAIDIDAE Aquatic Worm 1
TUBIFICIDAE Aquatic Worm 1
SIMULIIDAE Black Fly 1
CAENIS Mayfly 1
PARATENDIPES European Non-Biting Midge 1
STENOCHIRONOMUS European Non-Biting Midge 1
HEPTAGENIIDAE Flathead Mayfly 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.