1. (1) Definition. In this section, “grade stabilization structure” means a structure which stabilizes the grade in a channel in order to protect the channel from erosion, or to prevent gullies from forming or advancing. A “grade stabilization structure” may include any of the following:

   1. (a) Detention or retention structures such as dams, desilting reservoirs, sediment basins, and debris basins.
   2. (b) Related structures such as channel linings, chutes, drop spillways, or pipe drops.

2. (2) Eligible costs. A cost-share grant under s. ATCP 50.40 may reimburse any of the following:

   1. (a) Costs to design, construct, repair, or modify a grade stabilization structure.
   2. (b) Costs for leveling and filling needed to install the structure.
   3. (c) Costs to establish permanent vegetative cover, or to provide temporary cover until permanent cover is established. This may include costs for mulch, fertilizer, seed, and other necessary materials.
   4. (d) Costs for fencing to protect the structure.

3. (3) Design, construction, and maintenance. A cost-share grant under s. ATCP 50.40 may not reimburse any cost related to a grade stabilization structure unless all of the following conditions are met:

   1. (a) The department pre-approves the structure in writing if the embankment structural height is 15 to 25 feet, or the maximum storage capacity is 15 to 50 acre-feet.
   2. (b) The structural height does not exceed 25 feet, and the maximum storage capacity does not exceed 50 acre-feet.
   3. (c) DNR is notified and given the opportunity to conduct a feasibility study if the structure is adjacent to a navigable stream or a stream supporting a fishery.

   4. (d) The structure complies with all of the following that apply:

      1. 1. NRCS conservation practice standard 342 critical area planting (January, 2018).
      2. 2. NRCS conservation practice standard 350 sediment basin (August, 2016).
      3. 3. NRCS conservation practice standard 362 diversion (August, 2016).
      4. 4. NRCS conservation practice standard 382 fence (January, 2014).
      5. 5. NRCS conservation practice standard 500 obstruction removal (June, 2021).
      6. 6. NRCS conservation practice standard 410 grade stabilization structure (August, 2021).
      7. 7. NRCS conservation practice standard 412 grassed waterway (August, 2021).
      8. 8. NRCS conservation practice standard 468 lined waterway or outlet (June, 2021).
      9. 9. NRCS conservation practice standard 484 mulching (June, 2016).
      10. 10. NRCS conservation practice standard 606 subsurface drain (June, 2021).
      11. 11. NRCS conservation practice standard 620 underground outlet (June, 2021).
      12. 12. NRCS conservation practice standard 638 water and sediment control basin (January, 2018).
   5. (e) The landowner agrees to maintain the grade stabilization structure for 10 years unless farming operations on the affected land are discontinued.

History

History: CR 01-090: cr. Register September 2002 No. 561, eff. 10-1-02; CR 08-075: am. (3) (d) 1. to 4. and 7. to 10. Register April 2009 No. 640, eff. 5-1-09; CR 13-016: am. (3) (d) 1. to 12. Register February 2014 No. 698, eff. 5-1-14; CR 14-047: am. (3) (d) 2., 4., 10., 11. Register May 2015 No. 713, eff. 6-1-15; CR 16-012: am. (3) (d) 7. Register August 2016 No. 728, eff. 9-1-16; CR 16-083: am. (3) (d) 1. to 3., 5. to 7., 9., 12. Register January 2018 No. 745, eff. 2-1-18; CR 23-024: am. (3) (d) 1. to 12. Register May 2024 No. 821, eff. 6-1-24.