Water Demand and Supply: Changing Trends and Challenges, Slides of Marketing Management

Download Water Demand and Supply: Changing Trends and Challenges and more Slides Marketing Management in PDF only on Docsity! 11 The Changing Nature of Demand: • Total water use has leveled off in past 25 years, BUT . . . • Water uses/demands are expanding; demand patterns are changing: – Fast population growth (by up to 50% in some regions over next 40 years; especially in arid/semiarid areas) -- domestic water needs increasing. – Demand for food will increase by 25%(+) in next 25 years. – Demand for water transportation and power generation (including renewables) will increase. – Total consumptive water uses (water not immediately returned to the waterbody) increasing. 11 Docsity.com 12 - Demand patterns are changing (cont’d): – Irrigated acres: • in the West decreasing. • in the East increasing. – Pollutants (from man-made/natural sources) have eliminated some waters from being used. – Instream flow maintenance requirements (for recreation, habitat protection, endangered species, water quality). – Climate Change effects??? – [Economic Effects???] 12 Docsity.com 15 WATER AVAILABILITY (Supply) vs. DEMAND • While Demand is increasing, Water Availability (Supply) has NOT grown much over the past 30(+) years. – Supply has remained relatively constant. – Considerable resistance to building new water resources storage projects (funding, endangered species, environmental reviews, permitting difficulties). – Typically, it takes many years to get a project permitted, approved, and built (if at all). – Lack of Planning in many (not all) States to meet our Water Resources Needs over the next 50 Years. 15 Docsity.com Figure 15: Number and Capacity of Large Reservoirs Completed by Decade Total capacity added (million acre-to% 160 e) (Number of large reservoirs added 600 HEE capacity Humber of reservorrs Sources: UStS (gare) ana GAC (anatyste) GAO-03-514 Freshwater Supply _ 16 Docsity.com  Figure 20: States’ Population Growth from 1995 to 2025 eee Number of states in each category 6) [] 10% or tess 29) Category percent population growth [J Between 1196 and 30% [EG Between 319% and so% (10) 6) HE Mere than 50% GA0-03-514 Freshwater Supply ‘Source: U.S. Census Bureau, 17 17 Docsity.com