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Nadp CO85 Boulder - 400039105143201

Important Inventory Page
No graph available - there are no continuous, daily, or field measurement data types available for this location.

Available data

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Continuous data

0 data types available

Daily data

0 data types available

Field measurements

0 data types available

Discrete sample data

2 Observed properties (data types) available - with data from 2017-02-21 to 2017-05-23
8 Sampling activities
Discrete sample data are derived from manual field collection and laboratory analysis of physically collected samples collected during a visit to the monitoring location.

The table below summarizes the discrete field and laboratory sample results that have been collected at this monitoring location. The sample results can be downloaded from the Download Discrete Sample Data  page or by clicking the observed property link in each row of the table. The sample data are now identified by observed property, replacing the parameter and pcode USGS has used for many years. Additional information and explanation is provided in the Observed Properties and Parameter Codes section of the Code Dictionary tools .

The summary of sample data table is produced with the summary service API

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Available sample data
Characteristic group Observed property Total number of results Total number of activities Start date End date
Stable Isotopesdelta nitrogen-15/nitrogen-14 of nitrate, water, filtered, relative to atmospheric nitrogen882017-02-212017-05-23
Stable Isotopesdelta oxygen-18/oxygen-16 of nitrate, water, filtered, relative to Vienna Standard Mean Ocean Water (VSMOW) standard882017-02-212017-05-23
Site Location
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5 km
3 mi
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 February, 2025.