Site hydrology Sample Clauses

Site hydrology. 0 Xxxxx Property 3 The north property receives water from three sources: rainfall, groundwater 4 seepage (DWR 2014a), and Miner Slough via a 4-ft diameter culvert, 50–75 ft in 5 length, located in the southeast corner of the property. The culvert flap gate was 6 vandalized not long after the 2008 levee breach repair, resulting in the property 7 being inundated. DWR repaired and reinstalled this flap gate in February 2014. 8 9 Recent water level monitoring, conducted prior to the DWR flap gate repair, 10 indicated a fairly uniform water surface elevation of around 3.4 ft NAVD88 11 (somewhat below local mean tide level) with a daily fluctuation of roughly 0.05 ft 12 that aligns with the daily tidal cycle. Corresponding water depths across the site 13 are up to 0.9 ft in the intertidal areas, 2.9 in the shallow subtidal areas, and 5.9 ft 14 and deeper in the moderate to deep subtidal areas (see elevation intervals on 15 Figure 4-4). The property was holding approximately 3,500 acre-feet of water at 16 this stage. 18 The north property has retained its network of remnant agricultural drainage 19 ditches, as indicated by the greater depths of these rectilinear features (Figure 20 4-4). These remnant agricultural ditches appear to be relatively shallow, on the 21 order of a few feet in depth. 22