I don't have an account on the topix website, so I thought I'd address the question of snowfall totals and snowbank heights here. I'm sure those inquiring will find it here eventually.
Below are links to some screencaps from the Nancy Grace show aired on January 27, 2006 The caps are of file footage from WMUR News taken during February of 2004. It's unknown to me which day in February the footage was recorded.
Total snowfall accumulation for North Haverhill can be found through the NOAA website and is listed by month. In December 2003 there were 31.6 inches of snow that fell; January 2004 there were 7.2 inches and February 2004, 7.8 inches. This doesn't really help in nailing down the particular day in February which the images were recorded. It could've snowed accumulatively or after Feb 9. Pay sites can provide the data broken down by the days, which would be more useful. You also need to account for shrinkage from solar melting.
From corner of Bradley Hill Rd looking SE towards Weathered Barn.
In this image perspective deceives the eye with what looks like an enormous snowbank on the left side of the image. A better sense of the true heights of the bankings can be gauged by looking at the yellow traffic sign which is a fixed height and the snow stakes poking out of the top of the banking.
From corner of Bradley Hill across from SBD's house looking SE towards Weathered Barn.
This image shows the height of the banking the corner of Bradley Hill Rd. It's still difficult to gauge without a nearby object of fixed height. I would guess maybe 2 or 3 feet.
South looking at road shoulder towards "blue ribbon" tree and Old Peters Road.
This image shows the shoulder of the road looking at the location of the "blue ribbon tree." This is allegedly not the site where the Saturn came to rest which is a little further NW up the road. It looks slippery and sloppy but there is not alot of accumulation of snow here. As you can see in the tire tracks, which could've been made by another vehicle other than the Saturn, the height looks like it may come up 1/3 or 1/2 the height of a tire.
If the Saturn did indeed make these tracks, and if it had not snowed since, it is plain to see that they lead nowhere near any of these trees, indicating that she had not collided into them.
Near "blue ribbon tree" looking SE toward Weathered Barn.
In this image you can see the road and immediate shoulder is almost clean, by plow or solar melt.