====Size the pond====
[[Image:SmallNaturalPond.JPG|thumb|right|200px|Small, natural pond for rainwater harvesting.<br> Photo: [http://ruralradiowww.ctacomminit.intcom/RainwaterHarvesting.htm community-radio-africa/content/cta-rural-radio-packs CTA Rural Radio Packs.]]]
Pond size (and therefore dam height) can be decided according to water demand, evaporation & seepage losses, length of critical period and average stream flow according to the following:
* Determine water requirement (R litres/day)
* [http://www.smallreservoirs.org/ Small reservoirs tool kit] Edited by Marc Andreini, Tonya Schuetz, and Larry Harrington. Small Reservoirs Project. Topics include: intervention planning, storage and hydrology, ecosystems and human health, institutions and economics.
* [http://ruralradiowww.cta.int/RainwaterHarvestingen/article/2014-07-07/rural-radio-resource-programme-packs-a-punch.htm html CTA: Rural Radio Packs]. Interviews in mp3 and transcript format about rainwater harvesting techniques.
* [http://www.ideorg.org/OurTechnologies/WaterStorageSystems.aspx IDE]. Provides materials like plastic liners and drums for various rainwater harvesting methods. Serves Africa, Asia, and Latin America.