Chamnowu is a village in Chaubattakhal tehsil in district of Garhwal, Uttarakhand, India. As per the data provided by Census of India in 2011, total population of Chamnowu was 235 which includes 112 males and 123 females. Chamnowu covers 73.19 ha area. Pincode of Chamnowu is 246162.