A great site for maps, albeit in Hebrew - Amudanan.co.il
I just hiked Wadi Qelt over the weekend -
Started at the settlement of Alon, hiked down into the stream at Ein Mabua, full of water!
Then we continued down to Ein Qelt, the half way point, and then all the way to the monastery, following the red trail.
After Ein Qelt the aqueduct is being renovated and all the water is diverted back into the river bed - but it doesn't reach the monastery
Take into consideration about 6-7 hours of hiking, with stops to swim in the pools.
Also - it's winter - make sure there are no rains forecasted as there is a real danger of flash flooding.
I as an Israeli cannot continue to Jericho, though it's really quite close. To get back to Jerusalem or to your car you'd have to hitch - it's about 10K back to the main highway from the monastery.

