April 5, 2001

Southern Oregon and Northern California:
Very Dry Weather in Entire Area

Precipitation in Southern Oregon and Northern California in winter 2000/2001 has been below normal, and was much below that of the winters of 1999 and 2000.  This is true of the entire Pacific Northwest and the northern-most counties of California.

Moisture is the limiting factor for winter wheat, barley, hay crops, and pastures.  Summer crops will be very dependent on irrigation.

Landsat satellite images from August 2000 give a good indication of the amount of crops normally irrigated in these counties.

Download all of the images in this presentation (6.6 Megs, PDF format).

Slide 1: Klamath Basin, Comparison of Irrigated and Non-irrigated Area
Slide 2: Klamath Co., OR:  Cumulative Precipitation Comparison through Mar. 31, 2001
Slide 3: Jackson Co., OR:  Cumulative Precipitation Comparison through Mar. 31, 2001
Slide 4: Siskiyou Co., CA:  Cumulative Precipitation Comparison through Mar. 31, 2001
Slide 5: Modoc Co., CA:  Cumulative Precipitation Comparison through Mar. 31, 2001
Slide 6:  Pacific Northwest Cumulative Precipitation, Oct. 1, 1999-Mar. 31, 2000
Slide 7:  Pacific Northwest Cumulative Precipitation, Oct. 1, 2000-Mar. 25, 2001
Slide 8:  Southwest States Cumulative Precipitation, Oct. 1, 1999-Mar. 31, 2000
Slide 9:  Southwest States Cumulative Precipitation, Oct. 1, 2000-Mar. 25, 2001
Slide 10: Landsat Scene, Overview of Irrigated Summer Crops, Southern Oregon and Northern California, Aug. 25, 2000
Slide 11: Landsat Scene, Overview of Irrigated Summer Crops, Southern Oregon and Northern California,  Aug. 18, 2000
Slide 12: Landsat Scene, Overview of Mostly Irrigated Summer Crops, Siskiyou Co., CA, Aug. 25, 2000
Slide 13: Landsat Scene, Overview of Mostly Irrigated Summer Crops, Yreka, CA, Aug 25, 2000
Slide 14: Landsat Scene, Mostly Irrigated Summer Crops and Maturing Barley or Spring Wheat,  Klamath Falls, OR, Aug. 25, 2000
Slide 15: Landsat Scene, Medford Co., OR, Mostly Irrigated Summer Crops, Aug. 25, 2000
Slide 16: Landsat Scene, Mostly Irrigated Summer Crops, Modoc Co., CA, Summer Crops, Aug. 18, 2000
Slide 17: Landsat Scene, Mostly Irrigated Summer Crops, Modoc Co., CA at Alturas, Aug 18, 2000
Slide 18: Landsat Scene, Mostly Irrigated Summer Crops and Alfalfa, Modoc Co., CA at Middle Alkali Lake, Aug 18, 2000

For more information, contact Carl Gernazio, with the Production Estimates and Crop Assessment Division on 202-690-0136.

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