Sex ratios (female:male) for wild Rana sierrae in four northern Sierra Nevada streams surveyed 2016–2018. Sex ratios are based on abundance estimates, P-values test for biased sex ratio, and confidence intervals (CI) show proportion of females. Lone Rock Creek and Independence Creek are perennial streams; the others are intermittent streams. Numbers of estimated individuals were too low for the binomial test for Lone Rock Creek in 2017, SF Rock Creek main channel all years, and SF Tributary 2 in 2018. No males were found at Lone Rock Creek in 2017.