Jump to content
GMS, SMS, and WMS User Forum

Transient Pump Rate Interpolation


Recommended Posts

Are the pumping rates interpolated between time periods?  I have pump totalizer data on irregular time steps and I am trying to make sure that I am representing them correctly in the pump time series.  In the example below I show the date and the totalizer readings in (gals).  I convert the total gals to an average gpm computed over the time period since the last reading, then to a ft3/day for input into modflow.  Does modflow interpolate the flow between time steps, or does it use a specified flow rate for each time step until another one is specified (stepped pump rate).  For example is the pump rate on 3/13/12 in the example below  0.00 ft3/day,  or is it 77.33 ft3/day?  I want to make sure that I get the mass balance for pumped volume correct.


                                Date          gals)         (gpm)    (ft3/day)
3/12/12 0.0 0.0 0.0
3/15/12 5,212.0          1.2         -232.3
3/16/12 8,674.0          2.4         -462.8
3/19/12 9,752.0          0.2           -48.0
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...