Drawdown may refer to: Drawdown (book), 2017 book by Paul Hawken about climate change mitigation Drawdown (climate), the point at which greenhouse gas concentrations in the atmosphere begin to decline Drawdown (economics), decline in the value of an investment, below its all-time high Drawdown (hydrology), a lowering of a reservoir or a change in hydraulic head in an aquifer, typically due to pumping a well Drawdown card, used for testing paints and coatings through wet film preparation Drawdown chart, paper used to test various coating properties Income drawdown, a method withdrawing benefits from a UK Registered Pension Scheme See also Capital call, finance term, also known as a draw down Reduction (disambiguation)