Youngmeyer Ranch (KS) Continuous Discharge at Watershed Outlet Data (AIMS_GP_YMR_approach1_DISC)

Youngmeyer Ranch is located in Elk County, KS (outlet location: 37.56442, -96.49106) and managed by Witchita State University and owned by the Youngmeyer Trust. The ranch is roughly 1902 ha of grassland prairie used predominantly for cattle grazing and is burned every 1-2 years. A tributary of the Elk River, specifically the south branch of the Elk River headwaters, elevation at Youngmeyer ranges from 373-488 m with mean annual temperature of 13.7°C and mean annual precipitation of 979mm. This site is geologically constructed of Permian age limestone and shale with layers of chert below silty clay loam soils (Houseman et al. 2016). This site is predominantly grassland composed of the same dominant grasses as Konza Prairie, with scattered black oaks (Q. veluntina) along the creeks (Houseman et al. 2016) Between July 18th, 2021 and December 13th, 2024, we monitored surface water level at the outlet (ENM01) of the AIMS Youngmeyer Ranch watershed at 10 minute intervals using a vented pressure transducer (Seametrics PT12 vented pressure/temperature sensor). Over the study period, we collected field measurements of discharge (in liters per second) during maintenance visits every three weeks at the watershed outlet. We then used these field discharge estimates with corresponding water level measurements from the continuous record to generate a discharge-stage rating curve and estimate continuous discharge.

扬迈尔牧场（Youngmeyer Ranch）坐落于美国堪萨斯州埃尔克县，其出水口监测点位坐标为37.56442, -96.49106，由威奇托州立大学（Wichita State University）管理，产权归属扬迈尔信托基金（Youngmeyer Trust）。
该牧场总面积约1902公顷，为北美高草草原，主要用于肉牛放牧，每1-2年开展一次火烧抚育管理。
该区域属于埃尔克河支流——埃尔克河源头南支流域，扬迈尔牧场境内海拔区间为373-488米，年平均气温13.7℃，年平均降水量979毫米。
该场地的地质构造为二叠纪（Permian）石灰岩与页岩，粉砂质粘壤土土层下方分布燧石层（Houseman等，2016）。
区域植被以草原为主，优势草种与康扎草原（Konza Prairie）一致，溪流沿岸零星分布黑栎（Q. veluntina）（Houseman等，2016）。
2021年7月18日至2024年12月13日期间，研究团队采用通气式压力传感器（vented pressure transducer，Seametrics PT12型通气式压力/温度传感器），以10分钟为间隔对AIMS扬迈尔牧场流域出水口（ENM01）的地表水位开展连续监测。
研究周期内，每三周开展一次野外维护巡检，同步采集流域出水口的流量实测数据（单位：升/秒）。
随后结合连续水位观测序列与实测流量数据，构建水位-流量关系曲线（discharge-stage rating curve），并估算得到连续的流域流量序列。