Background
A seep is a wet spot on a hillside. Although you may not see any water, the earth will be moist, and there will be sedges, rushes, or cattails growing there.
Procedure
Here's how you can make the underground water available for wildlife:
• First: Get permission from the landowner (for private property) or the town or government agency (for public land).
• Use a trowel and dig carefully near the bottom of the seep.
• Dig a long, narrow tunnel; angle it slightly upwards.
• Each time you remove a scoop of earth, wait to see if water collects in the tunnel.
• Once water starts to flow, stop digging for the day.
• The next day, if the flow of water has increased, don't dig any more. If it has decreased, dig out a bit more earth.
• Once the water flows steadily, gently push some gravel into the hole to keep it from collapsing, or push a length of pipe with holes drilled along the bottom into the tunnel.
• With luck, the seep will make a terrific wildlife watering spot.