Ten IWMPs were completed in the province before 1995, and another 12 were still under development. These IWMPs can be established as higher level plans by the district manager if they meet the criteria defined in the Forest Practices Code Higher Level Plans: Policy and Procedures. Before being declared a higher level plan, however, an IWMP should be scrutinized for consistency with this guidebook and with the 4(c) requirements in Higher Level Plans: Policy and Procedures. Wherever possible, 4(c) plans should be consolidated as part of the new planning framework. The first consideration should be to integrate the IWMP with landscape units and objectives. If this is not possible, then designate the updated IWMP as a higher level plan.
Areas that do not meet the criteria for designation as community watersheds may still have high domestic water values (such as hillslopes where there is a concentration of individual domestic licences). If so, the district manager may designate the area as a subzone of a landscape unit.
It is appropriate to designate springs that are community water supplies and their spring source area as a sensitive area. Either the district manager or the designated environment official has the authority to identify a potential sensitive area; the district manager is responsible for establishing the designation.
Areas outside a community watershed boundary do not require a long-term forest development plan. In practice this means that most of the plan area will be covered by a five-year horizon. But, for the designated community watershed area, a long-term forest development plan is required.
Location of boundaries
Community watershed boundaries must be shown on the plan map. The boundaries are available in digital format through the Hydrology Branch, Ministry of Environment, Lands and Parks or the regional water management offices (see section 2.3 "Mapping").
Location of water intakes
The location of known community water supply intakes and related water supply infrastructures must be shown on the plan map. The location of community watershed intakes is available on the GIS files from BC Environment.
Individual domestic water intakes do not have to be shown on the forest development plan.
Terrain mapping
For the first three years after an area is designated as a community watershed, the forest development plan map must show the following areas:
Prior to approving a forest development plan on these areas, a field assessment for terrain stability and surface soil erosion hazard must be completed. The method for conducting this assessment is described in section 7 "Terrain and site hazard mapping and assessment."
Three years after designation as a community watershed, terrain stability and surface erosion hazard mapping must be carried out for the area of the first five years of proposed development that is within the community watershed. For example, watersheds designated as community watersheds on June 15, 1995 have until June 15, 1998 to complete terrain mapping requirements. The map must show the location and nature of areas with a moderate or high likelihood of landslides and areas with a high or very high soil surface erosion hazard (see section 7 "Terrain and site hazard mapping and assessment").
If terrain mapping is completed before the three-year date, then a terrain map must be shown in the forest development plan instead of the slope map.
Harvest planning restrictions
The following areas must not be proposed for harvesting in the forest development plan:
These areas are determined from the terrain hazard maps described above. For example, a cutblock cannot be proposed for a class V terrain stability unit (high hazard for landslides). Only if a professional geoscientist or professional engineer does a more detailed terrain stability assessment and determines from the hazard that the area is less sensitive than was mapped, can the area be shown as a proposed cutblock.
Clearcutting must not be proposed in any area within a community watershed that has a moderate hazard for landslides if that could result in a high risk of delivering sediment to streams.
No skidder harvesting that needs excavated or bladed trails can be proposed for any area with a high or very high mass wasting hazard or a high or very high surface erosion hazard, as determined from soil hazard keys. These site-specific keys don't need to be used when preparing a forest development plan. But it is likely that any area with a moderate likelihood of landslides or a high likelihood of surface erosion (as determined from the terrain hazard maps) will be off limits to harvesting systems that use excavated or bladed skid trails.
Riparian classification
The riparian classification must be shown on the plan map for all streams within the forest development plan area. See section 6 "Riparian management" for guidance in stream classification for community watersheds.
Cutblock size and green-up
The Forest Practices Code allows the district manager to require cutblock size restrictions and higher green-up requirements where they are needed for hydrological reasons. Section 8 "Harvest scheduling and cutblock size" describes this situation.
Watershed assessment and rate of cut
Two years after designation as a community watershed, a watershed assessment procedure (WAP) must be conducted before a forest development plan will be approved. For example, if the community watershed was designated on June 15, 1995, then a WAP must be completed on the watershed for any forest development plan submitted after June 15,1997. Notwithstanding the two-year date, the district manager can require a WAP on any community watershed at any time.
Location and scheduling of blocks and roads
Include the approximate location and harvesting schedule of proposed cutblocks, and whether the proposed silvicultural system is a partial-cut or clearcut system, and whether the proposed harvesting system is cable, aerial or ground-based.
Include an access development proposal for all forest roads associated with proposed harvesting.
Terrain hazard maps of the entire plan area
Five years after a community watershed is designated, terrain stability and surface erosion hazard mapping must be carried out on the whole area under the long-term forest development plan.
The terrain hazard map must show all areas with a moderate or high likelihood for landslides and with a high or very high surface erosion hazard (see section 7 "Terrain and site hazard mapping and assessment").
Riparian classification
Indicate the riparian classification for all streams shown on a forest cover map of the plan area. This classification can be based on air photo interpretation and best guess. Beyond five years into the plan it is not necessary to verify the classification in the field for the streams affected.
Watershed assessment
Update the WAP (level 1) at two-year intervals for the duration of the long-term forest development plan.
These steps are explained in the following pages.
If a community watershed is covered by a landscape unit or sensitive area plan, the process in Higher Level Plans: Policy and Procedures must be followed.
Mapping sensitive sites
The natural characteristics of the watershed must be shown on a single watershed map. These include the location of unstable slopes and areas of high surface erosion potential, the riparian classification and riparian areas sensitive to range activities (e.g., wildlife habitat areas, forest ecosystem networks).
Mapping existing land use
The extent, type and location of existing and approved development in the watershed should be mapped. Table 4 summarizes the watershed characteristics to be assessed and mapped.
The round table, based on the results of the WAP, may make recommendations to the district manager on rates and locations of future harvesting and road building, or watershed restoration. The outcome of the WAP will be used by the district manager to approve plans for the entire community watershed or for sub-basins within the watershed. Rate-of-cut recommendations are an outcome of this procedure and specific to every watershed.
Brief description of the WAP
The WAP has three levels:
| Level 1: | a reconnaissance level analysis, identifies watersheds at risk for cumulative effects and identifies specific hazards—peak flows, surface erosion, landslides, headwater or riparian conditions—that need to be addressed.
A level 1 WAP collects information on 15 environmental indicators, including total area logged, height of second growth, length of roads and number of landslides. The indicators show risk of hydrological impacts within the tributary basin. After the information is collected, it is scored and translated into hazard ratings between 0.0 and 1.0. |
| Level 2: | an overview assessment of channel stability (channel assessment procedure) or survey of sediment source is only conducted on watersheds that show high impact in the level 1 analysis.
A high surface erosion hazard triggers a level 2 sediment source survey. Any sub-basin or entire watershed that scores over 0.5 for peak flows, landslides or riparian condition requires a level 2 analysis of the stream channel. A combination of high hazards may result in constraints on short-term development plans for a watershed. |
| Level 3: | a detailed field investigation by a watershed specialist on highly impacted streams. It is used to develop management prescriptions to mitigate hydrological impacts. |
The results of the watershed assessment must be reflected in the long-term forest development plan. Once hazard levels for the watershed are determined, the round table can recommend broad watershed constraints for the licensee to use in preparing the forest development plan. Suggested prescription matrices are provided in the WAP to help in this process.
Any of the prescription matrices in WAP can be modified by the round table, if they can think of a more practical way to mitigate the hazard. For example, an intensive road deactivation program could reduce channel stability hazard to the point that additional harvesting can be approved. The round table can also recommend reducing the hydrological hazard over a 10- or 20-year period, rather than trying to reduce all hazards immediately. The rationale for deviating from the suggested prescription matrices must be documented.
In the case of a single licensee in a watershed, that licensee is responsible for carrying out the WAP. Where there are multiple licensees, information requirements are the responsibility of the licensee, but the analysis is coordinated by the Ministry of Forests.
The erosion and channel stabilization aspects of the watershed restoration plan should be completed by specialists and reviewed by the round table.
After preparing the long-term forest development plans, it may be necessary to re-analyze the entire watershed through the watershed assessment procedure. The long-term forest development plans can then be altered, if necessary, to ensure that high risks for cumulative impacts are not produced.
Public involvement
Public involvement in developing community watershed plans varies from referral and review to full participation at all stages, depending on the complexities of issues and the nature of the watershed. The public is involved in full consensus negotiations for strategic land use plans such as landscape unit plans or LRMPs. Therefore, in most cases, public involvement in community watersheds focuses on opportunities to review and comment on the operational plans.
Table 5. Community watershed planning responsibilities
Summary of responsibilities
Responsibilities for gathering and assessing information are as follows.
The Ministry of Forests is responsible for:
The Ministry of Environment is responsible for:
Forest licensees are responsible for:
The round table is responsible for:
The logging plan must also show the results of certain assessments carried out under the forest development plan or silviculture prescription for the area in the logging plan. For community watersheds these include the following:
Refer to the Logging Plan Guidebook for the general requirements of logging plans.
Refer to the Silviculture Prescription Guidebook for a complete description of the content and requirements of silviculture prescriptions.
The range use plan must prescribe the levels of use for key plant indicator species and soil parameters. Plant community objectives should be consistent with the "Target conditions" in section 10.
The range use plan should identify:
See section 10 "Range management" for a complete description of target conditions and planning requirements for range use plans.
The requirement for terrain mapping does not extend to those areas where only road maintenance activities or temporary or semi-permanent deactivation activities are planned.
These classifications must be shown on the access management plan map. See section 6 "Riparian management."
Riparian classification is not required where only routine maintenance or temporary deactivation of existing roads is planned. Nevertheless, all streams shown on a normal forest cover map must also be shown on the access management plan map.
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