If a downspout is not connected into gutter drainage, a splash block is needed to prevent water from pooling around the foundation and seeping in. This prevents leaks and cracks in your foundation as well as soil erosion in your yard.
Splash Guard
Splash blocks are generally under $10 per piece, although decorative cast aluminum versions can run as high as $70.
Costs vary greatly by region (and even by zip code). To get free estimates from local contractors, please indicate yours.