Drag the PP_waterplane Prefabs found in the PP_water folder onto your scene for your lakes and ponds. These have default settings, textures and cubemaps which add a fake reflection to the water plane.
This default reflection will be unlikely to suit your course and so you may have to generate a new reflection cubemap.
To do this, first add a gameobject cube to your scene and move it to the position from where you want to create the cubebmap reflections. This should usually be positioned somwhere near your lake.
Use the dropdown menu Custom/renderskybox and in the 'render from position' dialogue drag the gameobject cube . Clicking 'render' will generate cubemap images from this location and place them in a folder in your project called 'Skyboxes'. You may need to refresh the project folder for the new textures to be imported. After you have done this you can either delete your gameobject cube or disable it in the inspector.
The waterplace prefabs have already had a Default cubemap added to them which can be changed by selecting the relevant cubemap from the PP_water folder and simply dragging the new textures created above into the relevant slots. The reflection on the water plan will now change to use your new cubemap.
With a little bit of experimentation with the position from where the cubemap is generated, you can achieve some very convincing reflections.
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