Hydrologic Design Parameters Database for Water Harvesting Structures in Madhya Pradesh

Abstract

The databases of hydrologic design parameters need to be developed for proper design of water harvesting structures. Daily rainfall data for 20 years period (1991–2010) of ten identified districts of Madhya Pradesh (MP), State of India, were used for estimation of design rainfall and runoff values of various durations and different return periods. Rainfall data adequacy and randomness tests indicated that data are of adequate period and random in nature. Rainfall frequency analysis was carried out using nine probability density functions (pdfs). The best fitted pdf describing data set and giving minimum value of Chi-Square test parameter was identified for estimating the design rainfall values of different durations and frequencies (return periods). Design runoff values were estimated using NRCS-Curve Number method and design rainfall values. Peak flow rate database for 25 years return period was developed for varying catchment area (1–100 ha). The magnitudes of 1-day-maximum, 2-day-maximum and annual rainfall were estimated. The 1-day-maximum rainfall values for 25 year return period were estimated to be 257.0, 227.5, 254.5, 307.4, 255.0, 255.1, 292.5, 227.6, 346.4 and 173.0 mm for Bhopal, Indore, Raisen, Hoshangabad, Khandwa, Jabalpur, Datia, Dhar, Guna and Chhindwara districts, respectively. The annual runoff values for Bhopal, Indore and Jabalpur districts were estimated to be 322.7, 290.5 and 471.0 mm, respectively. The developed database may be used for design of water harvesting structures in Vertisols of Madhya Pradesh.