Identifying Flying Insects in Maine?

Last evening at 5:30 pm I noticed hundreds/thousands of small flying insects in my back yard milling around in the grass. They weren't interested in me or my dog. This morning I checked again and no sign of them. They were very small, winged, brownish in color, and had pointy bodies. I researched and found that they looked similar to "midges", but I am about a mile away from water. Any idea?