Wildflowers bloom in the Sierra Nevada
Wildflowers bloom in the Sierra Nevada

The lining of the flow line of ditches/swales
The lining of the flow line of ditches/swales - The lining of the flow line of ditches /swales. This inhibits the growth of weeds in the flow line of the channels, eliminating the habitat used by female egg laying mosquitoes.
The lining of the flow line of ditches /swales. This inhibits the growth of weeds in the flow line of the channels, eliminating the habitat used by female egg laying mosquitoes.