Cormit well/aquifer analytics
What makes a good remote monitoring system for wells/aquifers?
Well/aquifer metrics and graphs generated by Cormit for a cycling well
Summary metrics
for a CFW cycle
Aquifer performance —during CFW
% recovery for each pump cycle: For each pump cycle during the CFW cycle, the graph shows the amount the well refills expressed as a percentage of the static water level (% recovery). Generally, the aquifer’s ability to deliver water to the pump declines as the pump continues cycling and then stabilizes if the CFW cycle progresses long enough.
Water yield over CFW cycle: Well output as a function of cumulative volume of water pumped during a CFW cycle. Generally, the well output drops and then reaches equilibrium level as pumping continues. The water yield after well output stabilizes is the sustainable yield of the well/aquifer system
Aquifer performance—refilling well, post CFW
Refill after CFW: This graph shows the well refilling as a function of time after CFW ends. The refill is measured as the height of water in the well, expressed as a percentage of the static water level
If the refill curve starts out linear (straight line), it means the bottom of the aquifer is above the level of the depth sensor in the well. The point at which the initial linear segment ends and rate of refill slows marks the bottom of the aquifer.
Rate of refill as function of depth: This graph shows the rate at which the well is refilling after a CFW cycle ends as a function of the depth of water in the well.
The rate of refill is measured as as units of length per units of time (e.g., inches measured per minute). Initially, the rate will be high as the entire well is empty and there is no hydrostatic pressure in the well pushing back against water trying to enter the well. As the well fills with water and the depth goes above the bottom of the aquifer, hydrostatic pressure of the water in the well slows the rate of refill.
Long term trends in metrics
Trends over time in metrics: These graphs shows how this metric varies over time. data point in these graphs shows the value of a metric for a particular CFW cycle. Cycling wells will generate all of the metrics listed below. Monitoring (non-operating) wells will only generate static water level.
- Static water level
- Sustainable yield
- Well recovery to 95% static level
- CFW duration
- Restart delay
- % recovery—first/last pump cycle
- Pump rate (GPM)
Well/aquifer metrics and graphs
generated by Cormit for all wells
Time-series (hourly, daily, monthly)
Well output: Single day graph showing water pumped out of well. CFW is initiated during hour 8 and ends during hour 19.
Water depth in well: Single day graph. Prior to CFW initiated during hour 8, well is refilling and depth reaches static water level. During CFW, depth of water remains low as the the well does not refill very much during pump cycling.
Cormit
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