Radial lines on ranch satellite photos

[DQuick]

I notice that certain ranches, when viewed from above, have lines that radiate from a central point, like spokes of a wagon wheel.

The following link shows an example of such a pattern
http://maps.google.com/?ll=30.8262,-100.5611&t=h&z=16

Can someone explain what these patterns are?

 

[sic 'em reds]

Possibly the only water source in the certain area?

 

[Cowboy Up]

thats my best guess to, water tank

 

[Mike]

I would say they are fencelines. There are quite a few places down here with those pie shaped pastures.

The working facility is in the center and it makes it easy to gather cows.

Looks like the road comes in from the northeast.

 

[4Diamond]

Yep those are fencelines in pie shaped grazing systems.

 

[RobertMac]

It's a rotational grazing system around a central water point.