Soil and Water Conservation Engineering Recommendations PDKV seepage meter (2025) It is recommended to use PDKV developed seepage meter to measure seepage losses from pond. PDKV IoT based instrument for water seepage and evaporation losses (2025) It is recommended to use PDKV developed IoT based instrument to measure water seepage and evaporation losses from farm pond.. Recommended proportion of farm Pond water and saline ground water for irrigation (2025) In saline tract of Purna Valley of Vidarbha region, combination of 70:30 (Farm Pond water: saline ground water) is recommended for irrigation to cotton, pigeon pea and chick pea for higher productivity.