Dam project Village workers Reservoir Volume (m3) Infiltration (mm/10 min) Soil Composition Holding water at time of site visit? Catchment area/inlet Action (C=compact soil, D = deepen reservoir, S=spillway, IH=increase wall height) Comments and critical concern (if any) Reservoir 46 1800 1mm dark clay full of water natural gully inlet, chaco dam style C, D, S, IH currently trying to drain standing water so construction can continue Moruangisigiria 36 1000 2mm dark clay sand, hard to determine ratio yes plenty of water flow signs C, D, S, IH and move 1 tip of U so it's not blocking water from entering there is a natural bank on one side of the dam, advised to remove one of the U legs and make natural bank be part of dam. Nalebeny D12 38 1250 Couldn't do test bec of standing water dark clay full of water locals say plenty of water flow from the <3% slope C, D, IH and move both tip of U so it's not blocking water from entering currently trying to drain standing water so construction can continue Lemugete 49 1000 Couldn't do test bec of standing water dark clay full of water <2% slope, signs of good water flow C, D, S, IH currently trying to drain standing water so construction can continue Natipem 45 600 Couldn't do test bec of standing water dark clay full of water natural gully inlet, chaco dam style C, D, S, IH currently trying to drain standing water so construction can continue Toroi Central 123 1287 >20mm, second test 2mm (total saturated soil) fine sandy soil, small amount of clay yes but a small shallow area only (after recent big rainfall) decent sized catchment, but not much signs of water flowing Deepen reservoir when there is no standing water. This reservoir is made like an evaporation pond…and the main problem is that there are no signs of water flowing in.
Toroi West 88 1144.53 >20mm, couldn't do second test couldn't get sample due to full reservoir yes, almost full level good natural gully inlet, chaco dam style spillway needed nicely capturing all water flow from a seasonal gully way. Leleokot D23 154 1221 3mm sandy clay yes rock catchment from steep hillside one significant rock compacting, spillway, increase bank height locals do a good job of compacting. First observed instance of it. Ligot 120 600 4mm reddish 50% sandy soil few spots catchment area very wide C, D, S, IH, and move U tips so they don't block water from entering slight concern with infiltration rate, worth a revisit to see if holding water after recent heavy rain Nariwose 181 1250 3mm 40% sand 60% silt+clay few spots good catchment, with good water flow C, D, S, IH recently overtopped by heavy rainfall. Locals repairing washed away dam wall Nariwore 94 Kalapata 95 750 >20mm 82% sand tiny spots very steep foothill After revisits confirmed no water holding due to high sand content. Unfortunately this dam is a wasted effort Locherep 181 3150 1mm 30% silt + sand, 70% silt + clay standing water at the deeper end huge catchment area Move tips of U so they aren't blocking water from entering. Dig only half of the reservoir deeper standing water may prevent construction progress, dam is way too big. Built like evaporation basin.
Lochom 154 1250 Couldn't do test bec of standing water good clay content, exact clay % hard to determine yes, decent size pool of standing water <5% slope, natural grass silt trap, signs of water flowing compacting, spillway, increase bank height standing water may prevent construction progress Longaro D3 3750 1mm 50% silt + clay, 50% sand standing water at isolated dug outs decent sized catchment current planned reservoir far too large. Advised digging only half of the un dug planned area. Tip of U maybe blocking water from flowing in. standing water in dugouts prevent construction progress Usake D10 300 10mm sandy soil no tiny, no signs of water flowing advised not to carry out further work due to wasted efforts. Unsuitable site with sandy soil, tiny catchment, no signs of water flow Narube D11 1500 1mm clayey yes decent with standing water on shallow depressions move tips of U so they aren't blocking water from entering. Also dig only half of the reservoir deeper Nariamaoi D12 648 Couldn't do test bec of standing water clayey full of water Good C, D, S, IH standing water may prevent construction progress Tulelo D14 800 Couldn't do test bec of standing water clayey full of water Good C, D, S, IH and move 1 tip of U so it's not blocking water from entering standing water may prevent construction progress Nariwose D18 (sidok) 1400 Couldn't do test bec of standing water clayey full of water good, signs of water flow C, D, S, IH currently trying to drain standing water so construction can continue Loroyo (in Kaped) D19 3522.4 didn't have water to do test sandy clay no, signs of water evaporation one water diverting channel Existing dam rehabilitation, advised to dig a 20m semi circle 1.5m deeper within the current huge reservoir. Locals claim dam was filled before. In process of digging a diversion ditch to catch water runoff from road side channel. Locals has very strong opinion on wanting a big dam, does not want to listen to consultant's advise of making just a 3rd of the current reservoir deeper. This will be