More short-term streamflow variables to consider for snowmelt or glacier fed streams:
If snow pack air temperatures are cycling above and below freezing, you could see significant daily rises and drops in streamflow. If you arrive at the creek early in the morning and the flow looks too low - wait a few hours, you might be rewarded as the day warms up and the snow melts. Conversely, a flow that's just right, right now, might be too high for comfort in a few hours. The air temperatures at the elevations of the snow pack control melt rate, not air temperature where you are standing.
The directional exposure of a snow pack can make a big difference. If the snowpack of your favorite creek is in a sheltered, north-facing bowl or cirque, you need higher air temperatures to melt that snow, than a similar creek with south-facing snowpack (in the Northern Hemisphere). If you are comparing one creek without a gage to another with a gage, you should take snowpack exposure into account.
You might not see that first pulse of snowmelt until several hours after snow pack air temperatures go above freezing. More miles below the snow pack, gentler gradient, and lower temperature rise, mean longer waits. In some cases, the peak flows might be in late afternoon or early evening.
The weather just before and during your trip can play a big role. Warm weather will speed up snowmelt. A warm rainstorm can really speed up snowmelt – the worst flooding in California's Sierra Nevada mountains comes during and shortly after warm rainstorms on big snow packs. A cold snap can reduce streamflow to a trickle. You can see these patterns on nearby streams with gages; you should see similar patterns on your favorite creek. Spring weather forecasts in the Western USA can be notoriously inaccurate, so you should learn to make your own short-term weather forecasts based on observations and local knowledge.
On the other hand, streams and rivers which are primarily fed by springs, like some in Oregon's Cascade mountains, might have none of these issues. Once the river thaws, flows can be quite steady, regardless of the weather, time of day, etc. Snowmelt feeds these streams, but the pulses are filtered by running through miles of porous volcanic rocks and soils before surfacing in springs.