I'm a master electrician with thirty years in the trade.
If the creek is constant......and adequate to power a micro (or larger) turbine it is hands down your absolute best source.
If you have adequate fall (100' or more between hydro units) you can reuse the same water multiple times thru multiple hydros. if you have a massive flow you can power a massive gen set,
20 KW is adequate to power any task on the farm. Most of them concurrently.
If you have adequate volume, no nonsensical DC battery bank, inverter, or the mental, and schedule, contortions of balancing output, vs charge times, equalizing batteries, and a host of other minutia that keeps micro power such a headache.
Small Flows? still far simpler (and constant) than Solar.
Bad weather? a hydro unit only needs an adequate screen to keep floating trash out and it will create voltage thru darkness, storm, freezing, and fire(if your source dam is deep enough!).
So here's what you need to make a reasonable decision;
1; Gallons per minute (or acre feet per hr) flow rate at the low water time of the year. (August - September) 20 GPM @ 6'drop will make usable power. (Without going into the micro power routine)
2; Maximum achievable fall between a reasonable dam site (one on YOUR property that YOU control) and if possible a site to put the genset near point of use. (2.6 foot drop = 1 lb pressure) Running wire from far away to point of use is possible, but wire (size and length) is the second largest limiter in the system.
3; Legal right to use the water from the creek, in Western States most of the surface water has been ceded to the tribes if it flows into any major river or stream, or if the creek flows across multiple owners properties, previous landowners may have rights to so many acre feet that by the time it gets to you in a drought year, flow will become inadequate.
Solar sounds wonderfull......especially if you have remarkably deep pockets, and enjoy fighting with your spouse/kids about energy conservation if you have a kid you WILL become the energy Grinch and your deep pockets will be lightened every seven to ten years,
The Obama EPA brought such brutal restrictions on lead into play that its smelting has almost disappeared in America, scrap batteries are rising in value yearly, and rifle bullets are an average of thirty percent higher in 4 years, batteries do not last (except NIFE batteries ( not efficient but never obsolete!)).
Where Solar really shines is in passive design, think water heating, space heating (space cooling! if your clever or educated!)
Wind is a hit and miss, unless your site is ideal, but water pumping is a good application, (if you have adequate storage!)
Obviously if you have an ideal sight (equatorial for solar!) or unobstructed high winds , the costs start to balance out. One thing never taken into account is wind is remarkably destructive old windmills hang in tatters all over the west and leave any building for a few years unattended and roofing will blow loose!
Overshot wheels make torque, Undershot wheels are a distant second choice (OK its only my humble opinion!) Turbines make use of pressure efficiently, and if you are extraordinarily fortunate to have adequate drop, a Trompe will generate power and compress air concurrently.