I have a problem with the pump on my garden pond fountain. It keeps getting
clogged with small insects, leaves and other small debris.

You may have seen the type of 'water feature' in a number of DIY stores - a
plastic pond with hinged-flaps over which are placed pebbles/stones.
Lifting the flaps reveals a number of floating insects among other things!

I'd appreciate any tips from anyone on possible solutions.

Thanks
Ira