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New WQX 3.0 profiles are available at waterqualitydata.us/beta/. These profiles will contain recent USGS data added since March 11, 2024, which marks the beginning of limited accessibility for USGS data. Read more about the 3.0 profiles and associated changes here. This user interface only serves WQX2.2 profiles, which do NOT contain USGS data added after March 11, 2024.

WQP Home >  Providers >  STORET >  11NPSWRD_WQX >  11NPSWRD_WQX-SFAN_I&M_OLM18

Olema Creek above Randall Gulch (11NPSWRD_WQX-SFAN_I&M_OLM18) site data in the Water Quality Portal

Data Provider: STORET (Learn more about Water Quality Portal Data Providers)

This river/stream site, maintained by the National Park Service Water Resources Division (identifier 11NPSWRD_WQX), has the name "Olema Creek above Randall Gulch" and has the identifier 11NPSWRD_WQX-SFAN_I&M_OLM18. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)18050005.

This site is located in Marin County County, California at 37.9783055600 degrees latitude and -122.7356055560 degrees longitude using the datum NAD83. No horizontal location accuracy metadata is available. This site is at an elevation of 360 ft No vertical location accuracy metadata is available.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "11NPSWRD_WQX-SFAN_I&M_OLM18" into the "Site ID" box under Site Parameters

What other monitoring locations are upstream or downstream from this one?

Upstream and downstream locations

This map shows all Water Quality Portal stations that are 10 miles upstream (dashed dark blue) and 10 miles downstream (solid light blue) of this monitoring location (indicated by the large blue circle). The upstream and downstream functionality is provided by the Network Linked Data Index.

When were data collected at this location?

Periods of record for data characteristic groups

For a more detailed breakdown of data, go to the Monitoring Report at the EPA How's My Waterway Application
Characteristic Group Date Range*
Microbiological 2001 - 2024
Not Assigned 2000 - 2005
Nutrient 2001 - 2024
Physical 2000 - 2024
*Date ranges may contain gap years

What other information is available for this location?

Detailed Metadata

For the definitions of the metadata elements, please go to the Water Quality Portal user guide

Location Metadata Value
OrganizationIdentifier 11NPSWRD_WQX
OrganizationFormalName National Park Service Water Resources Division
MonitoringLocationIdentifier 11NPSWRD_WQX-SFAN_I&M_OLM18
MonitoringLocationName Olema Creek above Randall Gulch
MonitoringLocationTypeName River/Stream
MonitoringLocationDescriptionText Sample in Olema Creek above confluence with Randall Gulch. Walk straight back to opening in trees and down path to orange flag; turn left. And walk up creek to pink flag (in high water instead of going straight, turn left. On path and cross small tributary and go through blackberries to pink flag on Olema). Sample in running water slightly upstream of pink flag, also take flow upstream.
HUCEightDigitCode 18050005
LatitudeMeasure 37.9783055600
LongitudeMeasure -122.7356055560
HorizontalCollectionMethodName GPS-Unspecified
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 360
VerticalMeasure/MeasureUnitCode ft
VerticalCollectionMethodName Topographic Map Interpolation
VerticalCoordinateReferenceSystemDatumName SEALV
CountryCode US
StateCode 06
CountyCode 041
ProviderName STORET