Instructions
- Stations are listed at the left. Expand or contract to show available analytes
- Drag analytes onto graph to visualize data (maximum of two distinct units per graph)
- Use the buttons to alter the resolution and the slider bar to change the time range displayed
- Add additional graphs if desired
- Once finished, you can export graphs via the tool in the upper-right corner of the graph window
About
In July 2013, SFEI began continuous water quality monitoring for a number of nutrient-related parameters in San Francisco Bay, joining an existing network of sensors operated by several programs throughout the Bay and Delta. This visualization tool was designed to facilitate intuitive comparison of continuous data from around the Bay, and across a variety of analytes, to demonstrate the potential for collaborative monitoring across programs. In this initial phase, we included data from SFEI and several USGS programs, but in the future hope to include data from additional programs in the region as well as allow users to download data to promote further investigations of observed trends.
USGS
Dumbarton Bridge, Exploratorium at Pier 17 and Mallard Island are a subset of the continuous monitoring stations operated and maintained by the USGS Bay and Delta Flows and Sediment group as part of the CA Water Science Center. All data at these sites are collected using a YSI 6920 multi-parameter sonde. At Dumbarton Bridge and Mallard Island, two sondes are deployed at different locations in the water column. Data (provided by USGS staff directly or downloaded from NWIS) have undergone a provisional amount of review according to USGS protocols. More information...Delta Cross Channel, Cache Slough and Rio Vista at Decker Island are a subset of the continuous monitoring stations operated and maintained by the USGS Biogeochemistry group as part of the CA Water Science Center. All data at these sites are collected using a YSI EXO2 multi-parameter sonde and a Satlantic SUNAv2 (for nitrate). Data (provided by USGS staff directly or downloaded from NWIS) have undergone a provisional amount of review according to USGS protocols. More information...
SFEI
Alviso Slough and Dumbarton Bridge are a subset of the continuous monitoring stations operated and maintained by SFEI as part of the San Francisco Bay Nutrient Management Strategy. All data are collected using a YSI EXO2 multi-parameter sonde. Outliers and periods of sensor fouling/malfunction are omitted from this site. For more information, contact David Senn (davids@sfei.org) or Emily Novick (emilyn@sfei.org)DWR
Prisoner's Point, Martinez, Mossdale and Mallard Island are a subset of the continuous monitoring stations operated by the CA Department of Water Resources. All data are collected with a YSI 6600 multi-parameter sonde. Data were downloaded from the California Data Exchange Center and should be considered provisional. In order to be consistent with other agencies hosted on EnViz, chlorophyll-a data was converted from ug/L to RFU by dividing by 4 (per YSI recommendations). Access more information about DWR's real-time monitoring program.
Go...
Proceed to the Nutrients Visualization Tool