My California page: http://webpages.charter.net/tcrocker818/calnet.htm
March is typically the snowiest month in Tahoe.
No. Jan/Feb/Mar averages in inches:
29 years Sugar Bowl: 86/92/82
44 years Donner Pass: 80/77/70
40 years Alpine Meadows: 74/79/67
27 years Squaw 6,200: 49/54/49
35 years Heavenly 8,400: 53/52/47
36 years Kirkwood: 102/104/81
42 years Bear Valley: 79/80/68
42 years Mammoth: 75/74/59
Keep in mind the Sierra is the most volatile snow region in North America. Monthly standard deviations are about 2/3 of the monthly averages. March was the highest snowfall month in 8 of the 44 seasons at Donner Pass.
My strongest advice is not to decide this now. That won't be a busy time, and you should be able to make your decision in late January or early February without a financial penalty -- and possibly with better discounts. And you'll be able to make your decision based on actual conditions this season.
Nearly always good advice.
Last year we left booking until late December/early Jan and it was getting difficult to find a place which suited our needs - ski-in/out and hot tub.
Not so applicable at Tahoe where you're driving around sampling several areas. This is often true in Utah also.
But honestly, I'd choose a side of the lake and stick with it.
I agree in principle, and for a short trip definitely. What you want to avoid is doing much skiing on the side where you're not staying. If it's a 10-day trip and your first time at Tahoe, I would be tempted to switch the lodging base mid-trip.