[word=diversion] [tag=NNS] □
[word=diversion] [tag=NNS] □ □
[word=diversion] [tag=NNS] []
Soil conservation practices such as sod waterways and diversion berms may also help protect water sources . Possible physical limitations when modifying environmental flows : o bottom flow outlets or low level valves may be too small to release higher flow volumes , or inoperable due to age , lack of maintenance or sediment blockage ; o increasing minimum flows may be possible but full flood simulations may be more difficult ; and o diversion tunnels may not be operable , or not designed for regular use ( e.g . " However , not every hospital has the option of diverting ambulances , which is why ambulance diversion figures may not provide a true picture of the conditions in emergency departments .