Christian Wolff wrote:
One thing that stood out to me is that there could be a real danger putting in swales, terraces, ponds or other features on those hills. When putting in features on a slope is there a period of time that the land become most unstable than it was before the feature was cut?
If you check with state geological mapping services, you may be able to find maps of unstable hillsides. I know that there are such maps for the Santa Monica mountains of California, an area that is criss-crossed with fault lines and slope failures. Hillside failures have a lot to do with how wet the soil is and how much root system there is holding it. A lot of root system can take a heavy downpour, but a newly burned hillside, where a lot of the roots are dead and decaying may be much more prone to slippage.
Ideally, the permaculturist would go in and seed the hillside with something that can put in a quick canopy to keep the rain from causing erosion and which can also grow a tenacious root system.
Phyllanthus urinaria would fit the bill in my climate, but it's a bit too tropical to do you much good. If you find a good cover crop, one that will keep its grip on the soil even through a snowy winter, then you will have plenty of time to put in other features at your leisure.