[okie01]

Recognizing that you can't block access to a river flowing through a semi-arid area, the Israeli fence on the River Jordan generally lies 1/4 to 1/2 mile away from the river. The space between the fence and the river remains agricultural.

Nor is it much of a fence. The part I've seen appears to be about 6' of hogwire on metal posts, topped by three strands of barbed wire tilted toward the river.

Security is primarily provided by heavily armed, highly mobile squads of IDF, stationed at strong points along the fence line, supported by a network of forward observers and remote sensors.

[South40]

That sounds like a good plan. Some sort of fence would be better than none. I know the fence in San Diego works very well, and wish it were extended further as was planned.

Here's a shot of the double fencing built most recently. It's a bit difficult to see the second layer layer through the one in the foreground but it's there.