Inflow forecast

modeled

NOAA’s National Water Model, short-range run issued Sep 29, 10 AM CDT, for the 1 gauged tributary reach feeding Lake Buchanan. The model includes rain that has already fallen plus the near-term rain forecast.

Gauged inflow now

cfs · measured

Peak next 18h

113

cfs · ~Wed 4 AM CDT · modeled

Projected volume

128

acre-feet over 18h · modeled

If it all reached the lake

+0.01 ft

on Buchanan, before releases · inferred

Projected flow by tributary reach

Forecast inflow, next 17 hours, all gauged reaches: starts at 53 cfs, peaks at 113 cfs Wed 4 AM (modeled)
Hour	Total (cfs)	Colorado (cfs)
Tue 11 AM	53	53
Tue 12 PM	54	54
Tue 1 PM	57	57
Tue 2 PM	59	59
Tue 3 PM	63	63
Tue 4 PM	68	68
Tue 5 PM	74	74
Tue 6 PM	80	80
Tue 7 PM	87	87
Tue 8 PM	92	92
Tue 9 PM	98	98
Tue 10 PM	102	102
Tue 11 PM	105	105
Wed 12 AM	108	108
Wed 1 AM	110	110
Wed 2 AM	112	112
Wed 3 AM	113	113
Wed 4 AM	113	113

ColoradoTotal (all gauged reaches)

Dashed lines are forecast. Values are at the gauges; water takes hours to a couple of days to get from there to the lake. Flows are forecast to rise noticeably. National Water Model via NOAA/NWS · public domain.

“If it all reached the lake” spreads the forecast inflow volume over today’s surveyed surface area (TWDB), ignoring travel time, channel losses, upstream storage decisions and releases. It gives a sense of scale, not a prediction of the lake level. During floods, watch the main page instead.