Or. Admin. Code § 629-643-0145 - Small Forestland Owner Minimum Option Prescription for Seeps and Springs

(1) The following prescriptions apply to seeps and springs located in Western Oregon:

(a) For seeps and springs located within the riparian management areas described in Table 3, the small forestland owner shall retain all trees within 15 feet of the seeps and springs. If the 15-foot retention for seeps and springs already exists within the riparian management area described in Table 3, the small forestland owner shall not be required to retain additional trees. The length along the stream of additional tree retention area shall be limited to the seep and spring feature length.

(b) The small forestland owner may retain trees that meet the wildlife leave trees requirements within harvest type 2 or harvest type 3 units, pursuant to ORS 527.676, that are immediately adjacent to seeps and springs as described in OAR 629-655-0000.

Table 3: Western Oregon Small Forestland Owner Minimum Option Vegetation Retention Riparian Management Area Distances

Stream Type	Large	Medium	Small	Upstream distance
Type SSBT	100 feet	80 feet	60 feet	N/A
Type F	100 feet	70 feet	50 feet	N/A
Type N	70 feet	50 feet	See Type Np
Type Np, into Type SSBT			35	RH Max = 1,150 feet
Type Np, into Type F			35	RH Max = 600 feet
Type D	75 feet	75 feet	35 or 20 feet1	See OAR 629-643-0150

¹ Upstream distance from either Type F or Type SSBT

² 20 feet outside of Type Np vegetation retention requirements

(2) The following prescriptions apply to seeps and springs located in Eastern Oregon:

(a) For seeps and springs located within the inner zone distances described in Table 4, the small forestland owner shall retain all trees within 15 feet of the seeps and springs. No additional tree retention area shall be required if the 15 feet retention for seeps and springs already exists within the retention area described in Table 4. The small forestland owner shall limit the additional tree retention area's length along the stream to the seep and spring feature length. These rules do not apply to seeps and springs that are identified as important springs, as described in OAR 629-645-0000.

(b) The small forestland owner may retain trees that meet the wildlife leave trees requirements within harvest type 2 or harvest type 3 units, pursuant to ORS 527.676, that are immediately adjacent to seeps and springs, as described in OAR 629-655-0000.

Table 4: Eastern Oregon Small Forestland Owner Minimum Option Vegetation Retention Riparian Management Area Distances

Stream Type	Large		Medium		Small		Upstream distance1
	Inner	Outer 2	Inner	Outer 2	Inner	Outer 2
Type F or Type SSBT	30	70	30	50	30	30	N/A
Type N	30	45	30	30	-	-
Type Np, Terminal	-	-	-	-	20	20	RH Max = 500 feet
Type Np, Lateral	-	-	-	-	20	N/A	250 feet
Type D	30		30		20		See OAR 629-643-0150

¹ Upstream distance from either Type F or Type SSBT

² Outer Zone shall retain 60 square feet of basal area per acre; apply OAR 629-643-0120

(3) The small forestland owner shall submit a standardized form to the State Forester when using the small forestland owner minimum option around seeps or springs.

(4) In both Western Oregon and Eastern Oregon, if the tree retention area contains side channels and wetlands that extend beyond the riparian management areas described in Tables 3 and 4, the small forestland owner shall expand the tree retention area to entirely include any side channels and wetland plus at least 25 additional feet.

Notes

Or. Admin. Code § 629-643-0145

DOF 7-2022, adopt filed 11/21/2022, effective 1/1/2024

Statutory/Other Authority: ORS 527.710, Section 2(1), Chapter 33, Oregon Laws 2022

Statutes/Other Implemented: ORS 527.715, 527.765, Section 2(2), Chapter 33, Oregon Laws 2022