Outdoor water use represents up to half of total urban water demand in many semi-arid and arid cities and presents a climate adaptation challenge in urban centers. As indoor efficiency and reuse improves, outdoor use amounts to an increasingly large portion of consumptive urban water demand. Infill development, or the redevelopment of single-family properties to more dense multi-family and mixed-use developments, is a growing trend in urban planning; however, the influences of infill on outdoor water demand are poorly understood. The current work utilizes a remote sensing-based methodology to calculate parcel-scale irrigation rates in Denver, Colorado and applies a novel resampling methodology to model the impacts of redevelopment on outdoor water use. Results for 2018 showed irrigation rates varied by almost 250 mm between park and commercial land uses, and mean single-family irrigation rates of 224 mm exceeded multi-family rates by 70 mm. In the Berkeley neighborhood, modeled redevelopment of 1,347 single-family parcels (39.5%) resulted in a 102,000 m³ (83 acre-feet, or 30.2%) reduction in outdoor use. Citywide analyses indicate reductions of 141,000 m³ (114 acre-feet, or 0.76%) of residential outdoor use per one percent increase in redeveloped single-family parcels. These savings are equivalent to new annual supply for 181 four-person households and may provide significant contributions towards climate adaptation. Results highlight the importance of the continued integration of land use and water supply for demand management within the urban planning process.

在许多半干旱和干旱的城市，室外用水占城市总用水量的一半，这给城市中心带来了气候适应挑战。随着室内效率和再利用的提高，室外用水在消耗性城市用水需求中所占的比例越来越大。填充式开发，或将单户住宅重新开发为更密集的多户住宅和混合用途开发项目，是城市规划的一个日益增长的趋势；然而，人们对填充物对室外需水量的影响知之甚少。目前的工作利用基于遥感的方法来计算科罗拉多州丹佛的地块规模灌溉率，并应用一种新颖的重采样方法来模拟重建对室外用水的影响。2018 年的结果显示，公园和商业用地之间的灌溉率相差近 250 毫米，平均 224 毫米的单户灌溉率超过多户灌溉率 70 毫米。在伯克利社区，对 1,347 个单户住宅地块 (39.5%) 进行建模重建，产生了 102,000 m³（83 英亩-英尺，或 30.2%）户外使用减少。全市分析表明，重新开发的单户住宅每增加 1%，住宅户外使用量就会减少 141,000 m ³（114 英亩-英尺，或 0.76%）。这些储蓄相当于 181 个四人家庭的新年度供应量，并可能为气候适应做出重大贡献。结果强调了在城市规划过程中持续整合土地利用和供水对需求管理的重要性。