Evapotranspiration by Phreatophytes Along the Lower Colorado River at Havasu National Wildlife Refuge, Arizona

Scientific Investigations Report 2006–5043

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2006–5043

Table 3. Evapotranspiration site information.

[Station identifier: SC, saltcedar; MV, mixed vegetation; AW, arrowweed]

Station identifier	Latitude	Longitude	Installation date	Removal date	Relative density	Vegetation description
SC	34˚48’27.0”	114˚32’02.0”	05–23–02	06–16–04	High	High-density saltcedar. Few areas of bare, fine soil. Moist on surface part of the year, some moisture less than 1 foot in depth. Depth to water is about 8 feet.
MV	34˚46’17.1”	114˚31’34.5”	05–22–02	06–16–04	Medium	Medium-density, mixed vegetation. Screwbean mesquite, saltcedar, salt grass, arrowweed, baccharis, sharp-leafed rush. Very little bare soil. Medium grained soil is dry mostly at surface; some moisture about 1 foot below surface. Depth to water about 4–8 feet.
AW	34˚47’55.7”	114˚33’15.4”	12–18–02	06–16–04	Low to medium	Low-to-medium density arrowweed. Few saltcedar or mesquite. Some areas of bare, sandy soil. Dry on surface, some moisture at 1–2 feet depth. Depth to water is about 8 feet.

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