This paper assesses the sediment load of the glacier fed Langtang River, Nepal from April 2014 to March 2015. Water samples were collected from the centre of the river with a frequency of two samples per each sampling day using the Depth Integration Technique (DIT) on daily basis in the monsoon season, weekly in the pre-and post-monsoon seasons and bi-monthly in the winter season. Suspended sediment concentration (SSC) is calculated from the water samples using filtration followed by oven-drying, and a rating curve is used to calculate daily discharge of the Langtang River. The annual sediment yield is 109,276.75 tons and 37.69, 11.52 and 5.54 tons of sediment is transported per day in the pre-monsoon, post-monsoon and winter seasons, respectively. There is a very high value of 872.86 tons per day in the monsoon season, which contributes the highest sediment load among all of the seasons comprising 83% of the total sediment transport. Diurnal cycle of sediment discharge is clearly seen with higher sediment discharge during the evening than the morning and reaching maximum values of 41.1 kg•s −1 and 61.5 kg•s −1 , respectively. A clock-wise hysteresis loop has been obtained for discharge and sediment discharge where sediment flux is higher in the early monsoon than in the late monsoon for a corresponding discharge.

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IntroductionEqual access to water, sanitation and hygiene (WASH) for all requires leadership that prioritises and drives inclusion. Inclusive WASH also presents opportunities to advance equality more widely, with WASH a pathway to meaningful participation and empowerment for diverse groups. The concept of gender-transformative leadership-which connects ideas of leadership to transformative models of gender equality in development theory that challenge prevailing power structures-is a relevant lens for exploring inclusive WASH. This article shares findings and reflections from a positive deviance study that aimed to investigate gender-transformative leadership in the WASH sector to explore (i) the factors shaping gender-transformative leadership and the characteristics of gender-transformative leaders; (ii) actions taken by gender-transformative leaders; (iii) the types of outcomes achieved; and (iv) ways to strengthen gender-transformative leadership.MethodsThe study was undertaken during the COVID-19 pandemic and consisted of interviews with 19 leaders in Bhutan, Lao People's Democratic Republic, and Nepal. We developed a conceptual framework which considers leaders' (i) personal values and traits; (ii) leadership styles; (iii) actions; and (iv) outcomes, influenced by a range of (v) enabling factors and barriers.ResultsLeaders' personal values and traits included a strong learning orientation, social justice values, humility, courage, and altruism. Leadership styles were primarily empathetic, with leaders guided by a mission to lead by example and pursue equality in their professional and personal lives. Exploration of actions and outcomes revealed a range of inclusion-oriented WASH activities responding to pandemic-related challenges, with associated potential outcomes in shifting norms. However, validation of outcomes was not possible due to the study timeframe and complexity of tracing complex social change in a positive deviance study reliant on self-reporting. Analysis of enablers and barriers to gender-transformative leadership respectively emphasized the importance of educational opportunities and the persistence of traditional gender norms.ConclusionFindings contribute to the body of knowledge on gender-transformative leadership, being the first study to connect this concept to WASH. Future research could build further evidence by applying the conceptual framework to analyze additional contexts or sectors, and by more fully articulating and validating outcomes in terms of their potential for gender-transformative leadership to drive equality both in and beyond WASH.