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WQP Home >  Providers >  STORET >  11NPSWRD_WQX >  11NPSWRD_WQX-ROMO_USFW_FAN

FAN LAKE (11NPSWRD_WQX-ROMO_USFW_FAN) site data in the Water Quality Portal

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

This lake site, maintained by the National Park Service Water Resources Division (identifier 11NPSWRD_WQX), has the name "FAN LAKE" and has the identifier 11NPSWRD_WQX-ROMO_USFW_FAN. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)10190006.

This site is located in Larimer County County, Colorado at 40.4088611000 degrees latitude and -105.6419444000 degrees longitude using the datum NAD27. No horizontal 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-ROMO_USFW_FAN" 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.

Leaflet USGS The National Map: National Boundaries Dataset, 3DEP Elevation Program, Geographic Names Information System, National Hydrography Dataset, National Land Cover Database, National Structures Dataset, and National Transportation Dataset; USGS Global Ecosystems; U.S. Census Bureau TIGER/Line data; USFS Road data; Natural Earth Data; U.S. Department of State HIU; NOAA National Centers for Environmental Information. Data refreshed July 22, 2025.

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*
Inorganics, Major, Metals 1988 - 1988
Inorganics, Major, Non-metals 1988 - 1988
Inorganics, Minor, Metals 1988 - 1988
Nutrient 1988 - 1988
Physical 1988 - 1988
*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-ROMO_USFW_FAN
MonitoringLocationName FAN LAKE
MonitoringLocationTypeName Lake
MonitoringLocationDescriptionText THE STATION IS LOCATED ON THE TRAIL RIDGE CO 7.5 MINUTE SERIES (TOPOGRAPHIC) QUADRANGLE. THE SITE IS LOCATED AT FAN LAKE AND IS WITHIN THE BOUNDARIES OF ROCKY MOUNTAIN NATIONAL PARK. THE DATA ARE FROM A REPORT BY F.A. VERTUCCI AND PAUL STEPHEN CORN; "EVALUATION OF EPISODIC ACIDIFICATION AND AMPHIBIAN DECLINES IN THE ROCKY MOUNTAINS;" 1996. THIS STUDY WAS FUNDED BY THE U.S. FISH AND WILDLIFE SERVICE TO DETERMINE THE EFFECTS OF ACID PRECIPITATION ON PONDBREEDING AMPHIBIANS IN THE WESTERN UNITED STATES. RESULTS OF THIS STUDY SHOWED NO CONCLUSIVE EVIDENCE THAT EPISODIC ACIDIFICATION IS THE CAUSE OF OBSERVED DECLINES IN AMPHIBIAN POPULATIONS. FOR MORE INFORMATION ON THE PARK CONTACT THE CHIEF OF RESOURCES AT ROCKY MOUNTAIN NATIONAL PARK; ESTES PARK CO 805178397 (9705861206). DATA WERE PROCESSED AND UPLOADED TO STORET BY ADRIANE PETERSEN; NATIONAL PARK SERVICE WATER RESOURCES DIVISION; 1201 OAK RIDGE DRIVE SUITE 250; FORT COLLINS CO 80525 (9702253516).*** Legacy STORET Station Type: /TYPA/AMBNT/LAKE
HUCEightDigitCode 10190006
LatitudeMeasure 40.4088611000
LongitudeMeasure -105.6419444000
SourceMapScaleNumeric 0
HorizontalCollectionMethodName Unknown
HorizontalCoordinateReferenceSystemDatumName NAD27
CountryCode US
StateCode 08
CountyCode 069
ProviderName STORET