Or. Admin. R. 690-512-0020 – Administrative Boundaries

(1) The Greater Harney Valley Groundwater Area of Concern (GHVGAC) Boundary is defined for administrative purposes and is described and shown in Exhibit 1.
(2) The Malheur Lake Basin Boundary is delineated on the agency Map 12.6, dated January 1, 1966, and shown in Exhibit 2.
(3) The Serious Water Management Problem Area (SWMPA) Boundary is defined as the Harney Basin within the Malheur Lake Basin and within portions of Grant and Harney Counties as shown in Exhibit 3.
(4) The Groundwater Classification Boundary is defined as the Harney Basin within the Malheur Lake Basin and within portions of Grant and Harney Counties as shown in Exhibit 4.
(5) The Harney Basin is defined as the closed surface-water basin that drains into Malheur and Harney Lakes and includes the four National Watershed Boundary Dataset 8-digit hydrologic units Donner und Blitzen 17120003, Silver 17120004, Harney-Malheur Lakes 17120001, and Silvies 17120002 as shown in Exhibit 5.
(6) The Harney Basin Groundwater Reservoir Boundary is defined as the area coincident with the Harney Basin Boundary, as shown in Exhibit 5.
(7) The Harney Basin Critical Groundwater Area Boundary is defined as the area coincident with the Greater Harney Valley Groundwater Area of Concern Boundary as shown in Exhibit 1 and contains a portion of the Harney Basin Groundwater Reservoir.
[ED. NOTE: To view attachments referenced in rule text, click here for PDF copy.]

ORS 540.435, ORS 536.340 & ORS 537.735

ORS 537.027, ORS 537.525, ORS 536.300, ORS 540.435, ORS 536.340, ORS 537.735 & ORS 537.780