Warning: Javascript must be enabled to use all the features on this page!


Page Loading - Please Wait...

Click to hideNews Bulletins
  • Please see news on new formats
  • UPDATE, 11/9: As of November 8, the USGS has successfully restored all of the operational gages that stopped transmitting due to an issue with the satellite telemetry system that records and transmits data. The USGS will now focus on restoring other equipment that experienced the telemetry issues, including about 85 rapid deployment gages that are used periodically for emergency response. Read more
  • Full News RSS icon
Click to hide state-specific text

ICE EFFECTS ON STREAMFLOW

The formation of ice on rivers can cause discharge values to appear unusually high. Display of these erroneous discharge data may result in improper assessment of flow conditions and misuse of the data. For this reason, display of discharge values for streams significantly affected by ice may be disabled from view. Display of discharge data will resume when ice conditions are no longer present. Discharge values for streams minimally affected by ice will continue to be displayed. Flows for streams with these conditions appear to increase during the night and decrease to near-base-line conditions around midday. To estimate the correct discharge for these streams, use the flow rate that corresponds to the bottom of the discharge curve, rather than the peak that corresponds to the top of the curve. Note that this method of estimation is possible only when no surface runoff is occurring. Daily mean discharges for periods of both significant and minimal ice-effect will be estimated and published in the Annual Water-Data Report for the water year in which they occurred.


PROVISIONAL DATA SUBJECT TO REVISION

Selected Sites Available Period
01101000
1990-10-01  2018-11-14
01101500
1990-10-01  2018-11-14
01102000
1988-07-09  2018-11-14

Graph
Graph w/ stats
Graph w/o stats
Graph w/ (up to 3) parms
Table
Tab-separated
Days  (7)
 

  -- or --
Begin date
 

End date
 

 




Zoom period plot
y axis labels
 
   

Period selected plot

?
Enable tooltip
?
Enable approval and provisional periods
?
Enable Qualification Code periods
?
Enable Status Code periods
?
Enable Reference levels
Tip: To reset zoom period to period selected, double left-click in the "Period selected" plot.
Tip: To zoom to a shorter period, left-click and drag over the period of interest in either graph.