Oregon Administrative Rules
Chapter 629 - DEPARTMENT OF FORESTRY
Division 643 - WATER PROTECTION RULES: VEGETATION ALONG STREAMS
Section 629-643-0142 - Eastern Oregon; Small Forestland Owner Minimum Option Prescription
Current through Register Vol. 63, No. 12, December 1, 2024
(1) The purpose of this rule is to provide the small forestland owner minimum option prescription for vegetation retention in Eastern Oregon riparian areas, as shown in Table 4.
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 OAR 629-643-0143 describes all Type Np riparian vegetation requirements
(2) The small forestland owner shall apply the vegetation retention requirements to the riparian management areas of Eastern Oregon Type F, Type SSBT, and Type N streams.
(3) All other requirements for the standard practice prescription rules shall apply.
(4) Both the small forestland owner minimum option and the standard practice prescriptions and riparian management widths apply to Type N streams depending on whether the stream classification is perennial (Np) or seasonal (Ns). The State Forester shall determine the classification of a Type N stream as Np or Ns following the process described in OAR 629-635-0200(18).
Table 2: Eastern Oregon Standard Practice 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 |
70 |
30 |
45 |
- |
Type N |
30 |
45 |
30 |
45 |
- |
- |
- |
Type Np, Terminal |
30 |
30 |
RH Max = 500 feet |
||||
Type Np, Lateral |
30 |
N/A |
RH Max = 250 feet |
||||
Type D |
30 |
- |
30 |
- |
30 or 20 feet3 |
- |
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 20 feet outside of Type Np vegetation retention requirements
(5) For all Type F, Type SSBT, and large and medium Type N streams, the small forestland owner shall:
(6) For small terminal Type Np streams flowing into a Type F or Type SSBT stream, the small forestland owner shall retain:
(7) For small lateral Type Np streams flowing into a Type F or Type SSBT stream, the small forestland owner shall retain all trees within 20 feet from the edge of the active channel for a maximum distance of 250 feet upstream of the confluence with the Type F or Type SSBT stream.
(8) For a small Type Ns stream, the small forestland owner shall retain all shrubs and trees under six inches DBH within 30 feet of the active channel or channel migration zone, and for 750 feet upstream of the confluence with the Type F or Type SSBT stream. The small forestland owner shall adhere to an ELZ from the edge of the active channel for the entire Type N stream.
(9) For Type Np and Type Ns streams outside the tree retention area described in this rule, the small forestland owner shall follow all other Type N ELZ standard practice requirements in OAR 629-643-0120.
(10) For all Type F, Type SSBT, and Type N streams, retained trees in the outer zone in Table 4 that otherwise meet the wildlife leave trees requirements may be counted toward wildlife leave trees requirements within harvest type 2 or harvest type 3 units, pursuant to ORS 527.676. Trees in the forest conservation tax credit may be counted toward these requirements.
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