Water Balance Computation for River Flows and Gains 

Lower South Platte Home 







See Summary
page for current values used in Point Flow 



View Summary Table 


























NOTES: The S. Platte River in steady state flow
conditions is typically a gaining river due to groundwater inflows from the
tributary alluvial aquifer. With
transient, nonsteady state flow conditions as shown by upstream river gage
flows increasing rapidly and before these flows reach the next downstream
gage, a losing river (negative gain) will be graphed due to inchannel and
bank storage. To view daily flow
graphs for rapidly changing river gage flows, on Summary page click on
Structure Name in blue to view graphs at State website. During winter months,
ice may effect measured flows and Point Flow graph below could be in error. 





















Current Point Flow Period 

4/21/2024 15:10 












































































































































































































































































































































































































































































































































































































































































































































Current Point Flow Period 

4/21/2024 15:10 

Call locations are drying point in the river
along with computed dry points 





















































































































































































































































































































































































































































































































































































































































































































































NOTES: 

















If Gage is Not
Available for the current period, then a predicted gage flow will be
computed. 



In PointFlow
equation, measured diversions are positive, measured inflows are negative and
a gaining river is positive cfs/mile. 





















The Point Flow automated function (1)
computes a uniform river gain (cfs/mile or AcFt/mile) from a water balance
equation between river gages, (2) beginning upstream shifts enough river gain
to satisfy a diversion which results in zero flow below a diversion, (3)
recomputes river gain between a dry river point below a diversion and next
downstream gage, and (4) repeats steps 2 and 3 until all zero flow points
computed between gages. 




















