A Study of Hyporheic Characteristics Along a Longitudinal Profile of Lookout Creek, Oregon, 2003

Time series of tracer (Rhodamine WT) concentration data representing a "break-through curve" resulting from a single, multi-scale tracer test conducted along the length of Lookout Creek, from its 2nd-order headwaters through its 5th-order main stem. The longitudinal tracer test involved an in-stream injection of Rhodamine WT over 78 hrs, followed by monitoring at eight downstream locations for five months, starting in mid-June 2003 through the middle of November 2003. The injection site was located below the upper Old Growth Trail bridge. The monitoring sites include one downstream of the injection site, above and below the Cold Creek confluence, below the lower Old Growth Trail bridge, below Mack Creek confluence, above and below McRae Creek confluence, and at the HJA headquarters. Three additional inter-order tracer tests (IOTT) were carried out between each of the major stream confluences along Lookout Creek. The injection site for the McRae Creek IOTT was located below the McRae Cr. confluence and was monitored just downstream, at the end of the main floodplain, and at HJA headquarters. The injection site for the Mack Creek IOTT was located below the Mack Cr. confluence and was monitored just downstream, at an unnamed tributary midway between Mack Cr. and McRae Cr., and above the McRae Cr. confluence. The injection site for the Cold Creek IOTT was located below the Cold Cr. confluence and was monitored just downstream, at Longer Cr., and at the lower Old Growth Trail bridge. Concentration break through curves are available for all of the monitoring sites for the longitudinal and inter-order tracer tests. Flux break through curves are available for most of the monitoring sites. STAMMT-L model estimates for hyporheic exchange is listed for most of the monitoring sites.

本数据集为示踪剂（Rhodamine WT，罗丹明WT）浓度的时间序列数据，表征沿瞭望溪（Lookout Creek）全长开展的单次多尺度示踪试验所得到的"穿透曲线（break-through curve）"：试验覆盖范围从该溪流的二阶源头河段延伸至五阶主干河段。本次纵向示踪试验采用溪流内投加方式注入Rhodamine WT，投加时长为78小时；随后在下游8个监测点位开展为期5个月的持续监测，监测时段为2003年6月中旬至2003年11月中旬。该试验的投加点位于上游老龄步道桥下方。本次监测点位包括：投加点下游1处点位、冷水溪（Cold Creek）汇流点上下游点位、下游老龄步道桥下方点位、麦克溪（Mack Creek）汇流点下方点位、麦克雷溪（McRae Creek）汇流点上下游点位，以及HJA总部点位。另在瞭望溪沿线各主要溪流汇流区间开展了3次跨阶示踪试验（inter-order tracer test, IOTT）：麦克雷溪跨阶示踪试验的投加点位于麦克雷溪汇流点下方，监测点位包括该投加点下游紧邻处、主洪泛平原末端点位，以及HJA总部点位；麦克溪跨阶示踪试验的投加点位于麦克溪汇流点下方，监测点位包括该投加点下游紧邻处、位于麦克溪与麦克雷溪中途的无名支流点位，以及麦克雷溪汇流点上方点位；冷水溪跨阶示踪试验的投加点位于冷水溪汇流点下方，监测点位包括该投加点下游紧邻处、隆杰溪（Longer Creek）点位，以及下游老龄步道桥点位。针对本次纵向示踪试验与跨阶示踪试验的全部监测点位，均已获取浓度穿透曲线数据；多数监测点位可获取通量穿透曲线数据。多数监测点位均附有STAMMT-L模型估算的潜流交换量数据。