TABLE 5. COMPARISON OF KEY ALTERNATIVE ACTIONS ALTERNATIVE 2: ALTERNATIVE 3: KEY ALTERNATIVE 1: NO MODIFIED PROPOSED NO WATER COMPONENTS ACTION: ACTION STORAGE These systems are required by law to Option C: Same as maintain a minimum 10% Alternative 2 flow, but no monitoring information is available. Water Not specified. Scoping Open channel canals or Direct closed system Conveyance (to indicates a wide-variety of closed pipe using piping to fields using Storage and to conveyance systems would appropriate materials for the the most appropriate fields) continue to be used. designed application from materials for the source to storage may be designed application. used depending on site- specific conditions. Open systems would generally be less than 100 meters in length and would be cement lined to reduce infiltration and facilitate maintenance. Only closed systems using appropriate pipe material are used to convey water to fields to maintain pressure for drip irrigation. Storage Type Not specified. Scoping Earthen dams. No storage. indicates earthen storage types are the most Storage in Metal, Cement common type except for or Plastic Tanks. These may very small applications be either above or below where cement tanks have ground. Storage capacity limited by tank size and cost been used. which can be modified by the number of tanks. These systems would generally only be practical for individual family applications. Storage Size Storage size is only limited Specific storage size is No storage by site-specific physical limited by site-specific conditions, water physical conditions, water availability, developer availability, ability to comply objectives and ability to with all PEA design criteria comply with Honduran and implementing partner environmental laws. objectives. Scoping indicates that As a general rule, reservoir system sizes can generally size should be limited to be grouped into three dam heights less than six categories. 1) micro meters at the downstream storage that generally only toe and provide water serves individual family storage of approximately uses; 2) small storage with 10,000 to 20,000 m3. Based embankments less than six on site-specific conditions meters in height and these could also be designed
TABLE 5. COMPARISON OF KEY ALTERNATIVE ACTIONS KEY COMPONENTS ALTERNATIVE 1: NO ACTION: ALTERNATIVE 2: MODIFIED PROPOSED ACTION ALTERNATIVE 3: NO WATER STORAGE These systems are required by law to maintain a minimum 10% flow, but no monitoring information is available. Option C: Same as Alternative 2 Water Conveyance (to Storage and to fields) Not specified. Scoping indicates a wide-variety of conveyance systems would continue to be used. Open channel canals or closed pipe using appropriate materials for the designed application from source to storage may be used depending on site- specific conditions. Open systems would generally be less than 100 meters in length and would be cement lined to reduce infiltration and facilitate maintenance. Only closed systems using appropriate pipe material are used to convey water to fields to maintain pressure for drip irrigation. Direct closed system piping to fields using the most appropriate materials for the designed application. Storage Type Not specified. Scoping indicates earthen storage types are the most common type except for very small applications where cement tanks have been used. Earthen dams. Storage in Metal, Cement or Plastic Tanks. These may be either above or below ground. Storage capacity limited by tank size and cost which can be modified by the number of tanks. These systems would generally only be practical for individual family applications. No storage. Storage Size Storage size is only limited by site-specific physical conditions, water availability, developer objectives and ability to comply with Honduran environmental laws. Scoping indicates that system sizes can generally be grouped into three categories. 1) micro storage that generally only serves individual family uses; 2) small storage with embankments less than six meters in height and Specific storage size is limited by site-specific physical conditions, water availability, ability to comply with all PEA design criteria and implementing partner objectives. As a general rule, reservoir size should be limited to dam heights less than six meters at the downstream toe and provide water storage of approximately 10,000 to 20,000 m3. Based on site-specific conditions these could also be designed No storage
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