Home

Welcome to the HydroCloud wiki!

#HydroCloud Instructions

• Map: The mapping page. This page defaults to a Google Maps interface using the topographic maps as a background and the current NEXRAD precipitation image as the foreground. Points represent USGS stream gages. By clicking on a point, the stream discharge and precipitation data for that site will be loaded into the system, where it can be viewed on the graphing page. Clicking on a point will also open a dialog box giving supplementary information about the site, including the name and ID# of the stream gage.
• Graph: The graphing page. There are four graphs available:
  • Hydrograph: a plot of Stream Discharge on the Y axis measured in cubic feet per second (cfs). Time on the X axis. This graph also has a second graph below showing precipitation in mm over the same timeline. Stream discharge data come the USGS stream gage named in the top label. Precipitation comes from a watershed-averaged precipitation from NEXRAD stage IV precipitation estimates.
  • Flow Duration: a plot of all stream discharge measurements in cfs ordered by size, from largest to smallest. Stream discharge is plotted on the x axis in a logarithmic scale in scientific notation, so that "1e+2" equals 100 cfs and "4e+3" = 4000 cfs.
  • Histogram: disabled.
  • Hyetograph: disabled.
• Stats: The site statistics page. This lists each site that has been selected in the map view, along with some simple site statistics, including the USGS site # and the area of the watershed in square miles.
• ? (help): This will take you to this page.

Legend The legend can be toggled on and off by clicking on the legend symbol at the bottom right corner of the control bar.