摘要：Abstract. Long records of hillslope runoff and nutrient concentrations arerare – on seasonally frozen ground they are almost non-existent. The SwiftCurrent hillslopes at the Swift Current Research and Development Centre onthe Canadian Prairies provide such a long-term hydrological record. Runoff,runoff nutrient concentration, snowpack depth, density and water equivalent,soil moisture, and soil nutrient concentration were monitored on the three 5 ha hillslopes over a 50-year period (1962–2011). Digital elevation dataare available for the three hillslopes at a 2 m horizontal resolution, and,for one of the hillslopes (Hillslope 2), at a 0.25 m horizontal resolution.Runoff from the hillslopes was generated episodically during snowmelt andoccasional rainfall events. Hillslope runoff was measured with a 0.61 m H-flume. Daily runoff nutrient concentration data are available fornitrate–N (March 1971–April 2011), ammoniacal–N (February 1996–April2011), and phosphate-P (March–April 1971; June 1991–April 2011). Snowpackdata (snowpack depth, density, and water equivalent) were determined viamanual snow surveys carried out several times each winter, between Januaryand March, between 1965 and 2011. Gravimetric soil moisture content wasmeasured in October and April each year between 1971 and 2011 at five depthintervals (0–15, 15–30, 30–60, 60–90, and 90–120 cm) at nine points on eachhillslope. We provide these hillslope data in two publicly availablerepositories: (1) 1962–2011 data on runoff, runoff nutrients, snowpack, soilmoisture, soil nutrients, and crop and tillage practices at https://doi.org/10.23684/hhn5-rz52 (McConkey and Thiagarajan, 2018); and (2) digital elevation data athttps://doi.org/10.20383/101.0117 (Coles et al., 2018).Complete climate data recorded at a Environment and Climate Change Canadameteorological station located 390 m from the three hillslopes arepublicly available at http://climate.weather.gc.ca/ (last access: 30 August 2019).
